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S000004306 [Member] Investment Objectives and Goals - iShares S&P 100 ETF
Mar. 31, 2026
Prospectus [Line Items]  
Risk/Return [Heading] iShares S&P 100 ETF OEF | NYSE Arca
Objective [Heading] Investment Objective
Objective, Primary [Text Block]
The iShares S&P 100 ETF (the Fund) seeks to track the investment results of an index composed of 100 large-capitalization U.S. equities.