S000004323 [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 |
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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% | |||
| Russell 1000 Financials 40 Act 15/22.5 Daily Capped Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | [1] | 18.68% | 16.31% | 13.65% | ||
| iShares U.S. Financials ETF | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 18.22% | 15.85% | 13.20% | |||
| Performance Inception Date | May 22, 2000 | |||||
| iShares U.S. Financials ETF | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 17.83% | 15.42% | 12.72% | |||
| iShares U.S. Financials ETF | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 11.04% | 12.70% | 10.89% | |||
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