S000062159 [Member] Average Annual Total Returns |
12 Months Ended | 54 Months Ended | 60 Months Ended | 74 Months Ended | 76 Months Ended | 98 Months Ended | 120 Months Ended | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
[2] | Dec. 31, 2024 |
Dec. 31, 2024 |
Feb. 28, 2025 |
Dec. 31, 2024 |
[1] | Dec. 31, 2024 |
[4] | ||||||||||||
| Bloomberg U.S. Universal Index (Returns do not reflect deductions for fees, expenses or taxes) | |||||||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||||||
| Average Annual Return, Percent | 2.04% | [1] | (1.01%) | 0.06% | [1] | 1.79% | [3] | 1.35% | 1.73% | ||||||||||||
| Bloomberg MSCI US Aggregate ESG Focus Index (Returns do not reflect deductions for fees, expenses or taxes) | |||||||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||||||
| Average Annual Return, Percent | 1.23% | (0.30%) | 1.50% | ||||||||||||||||||
| iShares ESG Aware U.S. Aggregate Bond ETF | |||||||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||||||
| Average Annual Return, Percent | 1.23% | (0.43%) | 1.39% | ||||||||||||||||||
| Performance Inception Date | Oct. 18, 2018 | ||||||||||||||||||||
| iShares ESG Aware U.S. Aggregate Bond ETF | After Taxes on Distributions | |||||||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||||||
| Average Annual Return, Percent | (0.36%) | (1.40%) | 0.34% | ||||||||||||||||||
| iShares ESG Aware U.S. Aggregate Bond ETF | After Taxes on Distributions and Sales | |||||||||||||||||||||
| Prospectus [Line Items] | |||||||||||||||||||||
| Average Annual Return, Percent | 0.72% | (0.72%) | 0.63% | ||||||||||||||||||
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