v3.26.1
S000004349 [Member] Investment Objectives and Goals - iShares Select U.S. REIT ETF
Apr. 30, 2026
Prospectus [Line Items]  
Risk/Return [Heading] iShares Select U.S. REIT ETFICF | Cboe BZX
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The iShares Select U.S. REIT ETF (the Fund) seeks to track the investment results of an index composed of U.S. real estate investment trusts (REITs).