S000004362 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 267 Months Ended |
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| Bloomberg U.S. Universal Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.58% | 0.06% | 2.44% | |
| Bloomberg U.S. Aggregate Bond Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.30% | (0.36%) | 2.01% | |
| iShares Core U.S. Aggregate Bond ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.19% | (0.38%) | 1.97% | |
| Performance Inception Date | Sep. 22, 2003 | |||
| iShares Core U.S. Aggregate Bond ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.50% | (1.58%) | 0.84% | |
| iShares Core U.S. Aggregate Bond ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 4.23% | (0.81%) | 1.01% |