S000004309 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 305 Months Ended |
|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
|
| S&P Total Market Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 17.05% | 13.07% | 14.22% | |
| S&P MidCap 400 Value Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.58% | 11.01% | 10.69% | |
| iShares S&P Mid-Cap 400 Value ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.39% | 10.82% | 10.47% | |
| Performance Inception Date | Jul. 24, 2000 | |||
| iShares S&P Mid-Cap 400 Value ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 6.89% | 10.29% | 9.94% | |
| iShares S&P Mid-Cap 400 Value ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 4.66% | 8.49% | 8.49% |