S000018861 [Member] Investment Objectives and Goals - iShares National Muni Bond ETF |
Feb. 28, 2025 |
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| Prospectus [Line Items] | |
| Risk/Return [Heading] | iSHARES® NATIONAL MUNI BOND ETF Ticker: MUBStock Exchange: NYSE Arca |
| Objective [Heading] | Investment Objective |
| Objective, Primary [Text Block] | The iShares National Muni Bond ETF (the “Fund”) seeks to track the investment results of an index composed of investment-grade U.S. municipal bonds.
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