S000004313 [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 SmallCap 600 (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 6.02% | 7.31% | 9.81% | |
| iShares Core S&P Small-Cap ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.95% | 7.23% | 9.76% | |
| Performance Inception Date | May 22, 2000 | |||
| iShares Core S&P Small-Cap ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.52% | 6.75% | 9.31% | |
| iShares Core S&P Small-Cap ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 3.72% | 5.56% | 7.90% |