v3.26.1
S000069532 [Member] Expense Example - iShares ESG Select Screened S&P 500 ETF - iShares ESG Select Screened S&P 500 ETF
Mar. 31, 2026
USD ($)
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 8
Expense Example, with Redemption, 3 Years 26
Expense Example, with Redemption, 5 Years 45
Expense Example, with Redemption, 10 Years $ 103