S000015627 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 224 Months Ended | ||
|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| Russell 3000 Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 17.15% | 13.15% | 14.29% | |||
| FTSE Nareit Equity REITs 40 Act Capped Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | [1] | 2.53% | 6.55% | 5.63% | ||
| iShares Core U.S. REIT ETF | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 2.51% | 6.47% | 5.57% | |||
| Performance Inception Date | May 01, 2007 | |||||
| iShares Core U.S. REIT ETF | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 1.48% | 5.38% | 4.22% | |||
| iShares Core U.S. REIT ETF | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 1.71% | 4.68% | 3.81% | |||
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