S000004306 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 302 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 100 (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 20.14% | 16.44% | 16.21% | |
| iShares S&P 100 ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 19.90% | 16.21% | 15.98% | |
| Performance Inception Date | Oct. 23, 2000 | |||
| iShares S&P 100 ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 19.64% | 15.88% | 15.54% | |
| iShares S&P 100 ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 11.93% | 13.02% | 13.42% |