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 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Class K | BlackRock Mid-Cap Value Fund | Class K | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 13.79% | 9.46% | 12.63% | (3.98%) | 26.48% | 7.21% | 29.65% | (9.46%) | 8.82% | 22.77% |