S000004321 [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 Energy RIC 22.5/45 Capped Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | [1] | 6.47% | 11.59% | 4.15% | ||
| iShares U.S. Energy ETF | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 6.04% | 11.15% | 3.74% | |||
| Performance Inception Date | Jun. 12, 2000 | |||||
| iShares U.S. Energy ETF | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 5.37% | 10.19% | 2.87% | |||
| iShares U.S. Energy ETF | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 4.07% | 8.63% | 2.70% | |||
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