v3.26.1
Class K [Member] Investment Objectives and Goals - Class K - BlackRock Global Equity Market Neutral Fund
Apr. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] Fund Overview Key Facts About BlackRock Global Equity Market Neutral Fund
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The investment objective of BlackRock Global Equity Market Neutral Fund (the Fund), a series of BlackRock FundsSM (the Trust), is to seek total return over the long term.