v3.26.1
Services [Member] Investment Objectives and Goals - Services - BLACKROCK TACTICAL OPPORTUNITIES FUND
Apr. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] Fund OverviewKey Facts About BlackRock Tactical Opportunities Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The investment objective of BlackRock Tactical Opportunities Fund (the “Fund”), a series of BlackRock FundsSM (the Trust), is to seek total return.