v3.26.1
S000009421 [Member] Investment Objectives and Goals - iShares U.S. Insurance ETF
Mar. 31, 2026
Prospectus [Line Items]  
Risk/Return [Heading] iShares U.S. Insurance ETF IAK | NYSE Arca
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The iShares U.S. Insurance ETF (the Fund) seeks to track the investment results of an index composed of U.S. equities in the insurance sector.