S000026552 [Member] Expense Example - iShares Russell Top 200 Growth ETF - iShares Russell Top 200 Growth ETF	Mar. 31, 2026 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 20
Expense Example, with Redemption, 3 Years	64
Expense Example, with Redemption, 5 Years	113
Expense Example, with Redemption, 10 Years	$ 255

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