v3.26.1
Investment Objectives and Goals - BLACKROCK SELECT TREASURY BASED LIQUIDITY FUND
Apr. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] Fund Overview Key Facts About
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The investment objective of BlackRock Select Treasury Based Liquidity Fund (the “Fund”, formerly known as BlackRock Liquid Federal Trust Fund), a series of BlackRock Liquidity Funds (the “Trust”), is to seek current income as is consistent with liquidity and stability of principal.