Investor A C Institutional and Class R [Member] Expense Example, No Redemption - Investor A, C, Institutional and Class R - BlackRock Advantage SMID Cap Fund, Inc. - Investor C Shares |
Mar. 31, 2026
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 151 |
| Expense Example, No Redemption, 3 Years | 558 |
| Expense Example, No Redemption, 5 Years | 992 |
| Expense Example, No Redemption, 10 Years | $ 1,960 |