S000019342 [Member] Expense Example - iShares New York Muni Bond ETF - iShares New York Muni Bond ETF	Feb. 28, 2026 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 9
Expense Example, with Redemption, 3 Years	29
Expense Example, with Redemption, 5 Years	51
Expense Example, with Redemption, 10 Years	$ 115

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