S000004323 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 295 Months Ended | ||
|---|---|---|---|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
Dec. 31, 2024 |
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| Russell 3000 Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 23.81% | 13.86% | 12.55% | |||
| 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] | 31.88% | 12.26% | 11.73% | ||
| iShares U.S. Financials ETF | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 31.38% | 11.81% | 11.29% | |||
| Performance Inception Date | May 22, 2000 | |||||
| iShares U.S. Financials ETF | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 30.94% | 11.35% | 10.80% | |||
| iShares U.S. Financials ETF | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 18.84% | 9.30% | 9.19% | |||
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