S000088434 [Member] Investment Objectives and Goals - iShares Top 20 U.S. Stocks ETF |
Mar. 31, 2026 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | iShares Top 20 U.S. Stocks ETF TOPT | NYSE Arca |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The iShares Top 20 U.S. Stocks ETF (the “Fund”) seeks to track the investment results of an index composed of the 20 largest U.S. companies by market capitalization within the S&P 500 Index.
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