Investor P [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 P | BlackRock LifePath Index 2060 Fund | Investor P Shares | |||||||||
| Prospectus [Line Items] | |||||||||
| Annual Return [Percent] | 21.35% | 15.94% | 21.26% | (18.57%) | 18.53% | 14.65% | 26.51% | (7.97%) | 21.08% |