S000004349 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 287 Months Ended |
|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
|
| S&P Total Market Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 23.87% | 13.78% | 12.48% | |
| Cohen & Steers Realty Majors Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.68% | 3.56% | 5.61% | |
| iShares Select U.S. REIT ETF | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 5.30% | 3.19% | 5.23% | |
| Performance Inception Date | Jan. 29, 2001 | |||
| iShares Select U.S. REIT ETF | After Taxes on Distributions | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 4.39% | 2.30% | 4.08% | |
| iShares Select U.S. REIT ETF | After Taxes on Distributions and Sales | ||||
| Prospectus [Line Items] | ||||
| Average Annual Return, Percent | 3.34% | 2.15% | 3.62% |