v3.25.2
S000058037 [Member] Average Annual Total Returns
12 Months Ended 60 Months Ended 90 Months Ended
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Bloomberg U.S. Universal Index (Returns do not reflect deductions for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent [1] 2.04% 0.06% 1.41%
Bloomberg MSCI US Corporate ESG Focus Index (Returns do not reflect deductions for fees, expenses or taxes)      
Prospectus [Line Items]      
Average Annual Return, Percent 2.07% 0.42% 2.13%
iShares ESG Aware USD Corporate Bond ETF      
Prospectus [Line Items]      
Average Annual Return, Percent 2.03% 0.11% 1.87%
Performance Inception Date     Jul. 11, 2017
iShares ESG Aware USD Corporate Bond ETF | After Taxes on Distributions      
Prospectus [Line Items]      
Average Annual Return, Percent 0.26% (1.15%) 0.58%
iShares ESG Aware USD Corporate Bond ETF | After Taxes on Distributions and Sales      
Prospectus [Line Items]      
Average Annual Return, Percent 1.19% (0.44%) 0.88%
[1] The Fund has added this broad-based index in response to new regulatory requirements.