Investor A C and Institutional [Member] Investment Objectives and Goals - Investor A, C and Institutional - BlackRock Advantage Small Cap Core Fund

May 31, 2025

Prospectus [Line Items]

Risk/Return [Heading]

Fund Overview Key Facts About BlackRock Advantage Small Cap Core Fund

Objective [Heading]

Investment Objective

Objective, Primary [Text Block]

The investment objective of BlackRock Advantage Small Cap Core Fund (the “Fund”), a series of BlackRock FundsSM (the “Trust”), is to seek capital appreciation over the long term.