S000004307 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 307 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 (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.50% | 9.12% | 10.72% | |
| iShares Core S&P Mid-Cap ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.46% | 9.07% | 10.67% | |
| Performance Inception Date | May 22, 2000 | |||
| iShares Core S&P Mid-Cap ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 7.05% | 8.65% | 10.22% | |
| iShares Core S&P Mid-Cap ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 4.60% | 7.07% | 8.68% |