Investor A, C, Institutional and Class R [Member] Expense Example, No Redemption - Investor A, C, Institutional and Class R [Member] - BLACKROCK HEALTH SCIENCES OPPORTUNITIES PORTFOLIO - INVESTOR C |
May 31, 2025
USD ($)
|
|---|---|
| Prospectus [Line Items] | |
| Expense Example, No Redemption, 1 Year | $ 188 |
| Expense Example, No Redemption, 3 Years | 582 |
| Expense Example, No Redemption, 5 Years | 1,001 |
| Expense Example, No Redemption, 10 Years | $ 1,970 |