S000013499 [Member] Average Annual Total Returns |
12 Months Ended | 60 Months Ended | 120 Months Ended | 225 Months Ended | ||
|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
Dec. 31, 2025 |
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| MSCI USA Index (Returns do not reflect deductions for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 17.75% | 13.87% | 14.79% | |||
| ICE Exchange-Listed Preferred & Hybrid Securities Index (Spliced) (Returns do not reflect deductions for fees, expenses or taxes) | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | [1] | 5.08% | 1.98% | 4.08% | ||
| iShares Preferred and Income Securities ETF | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 4.70% | 1.54% | 3.47% | |||
| Performance Inception Date | Mar. 26, 2007 | |||||
| iShares Preferred and Income Securities ETF | After Taxes on Distributions | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 2.78% | (0.20%) | 1.77% | |||
| iShares Preferred and Income Securities ETF | After Taxes on Distributions and Sales | ||||||
| Prospectus [Line Items] | ||||||
| Average Annual Return, Percent | 3.46% | 0.76% | 2.26% | |||
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