Form N-1A Supplement |
Oct. 31, 2025 |
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| Prospectus [Line Items] | |
| Supplement to Prospectus [Text Block] | iShares U.S. ETF Trust Supplement dated October 9, 2026 to the currently effective Summary Prospectus, Prospectus and Statement of Additional Information (the “SAI”) for the iShares Strategic Metals ETF (ISTM) (the “Fund”) Change in the Fund’s “Summary of Principal Risks” The section of the Fund’s Summary Prospectus and Prospectus entitled “Summary of Principal Risks” is amended to delete the paragraph entitled “Non‑Diversification Risk”. If you have any questions, please call 1‑800‑iShares (1‑800‑474‑2737). iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.
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| iShares Strategic Metals ETF | |
| Prospectus [Line Items] | |
| Supplement to Prospectus [Text Block] | iShares U.S. ETF Trust Supplement dated October 9, 2026 to the currently effective Summary Prospectus, Prospectus and Statement of Additional Information (the “SAI”) for the iShares Strategic Metals ETF (ISTM) (the “Fund”) Change in the Fund’s “Summary of Principal Risks” The section of the Fund’s Summary Prospectus and Prospectus entitled “Summary of Principal Risks” is amended to delete the paragraph entitled “Non‑Diversification Risk”. If you have any questions, please call 1‑800‑iShares (1‑800‑474‑2737). iShares® is a registered trademark of BlackRock Fund Advisors and its affiliates.
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