v3.25.2
S000074168 [Member] Average Annual Total Returns
 12 Months Ended 38 Months Ended
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% (1.98%)
iBoxx MSCI ESG Advanced USD Liquid Investment Grade Index (Returns do not reflect deductions for fees, expenses or taxes)    
Prospectus [Line Items]    
Average Annual Return, Percent 1.08% (3.19%)
iShares ESG Advanced Investment Grade Corporate Bond ETF    
Prospectus [Line Items]    
Average Annual Return, Percent 0.91% (3.39%)
Performance Inception Date   Nov. 08, 2021
iShares ESG Advanced Investment Grade Corporate Bond ETF | After Taxes on Distributions    
Prospectus [Line Items]    
Average Annual Return, Percent (0.78%) (4.78%)
iShares ESG Advanced Investment Grade Corporate Bond ETF | After Taxes on Distributions and Sales    
Prospectus [Line Items]    
Average Annual Return, Percent 0.53% (3.14%)
[1] The Fund has added this broad-based index in response to new regulatory requirements.