S000004306 [Member] Annual Total Returns |
12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| iShares S&P 100 ETF | iShares S&P 100 ETF | ||||||||||
| Prospectus [Line Items] | ||||||||||
| Annual Return [Percent] | 19.90% | 30.66% | 32.65% | (21.01%) | 29.11% | 21.20% | 31.98% | (4.05%) | 21.77% | 11.16% |