S000009421 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 236 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% | |
| Dow Jones U.S. Select Insurance Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 9.89% | 17.57% | 12.87% | |
| iShares U.S. Insurance ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 9.51% | 17.13% | 12.43% | |
| Performance Inception Date | May 01, 2006 | |||
| iShares U.S. Insurance ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 9.07% | 16.62% | 11.92% | |
| iShares U.S. Insurance ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.94% | 13.78% | 10.22% |