S000031844 [Member] Investment Strategy - iShares Core High Dividend ETF	Apr. 30, 2026
Prospectus [Line Items]
Strategy [Heading]	Principal Investment Strategies
Strategy Narrative [Text Block]	The Fund seeks to track the investment results of the Morningstar® Dividend Yield Focus IndexSM (the “Underlying Index”), which offers exposure to high quality U.S.-domiciled companies that have had strong financial health and an ability to sustain above average dividend payouts. The Underlying Index is a subset of the Morningstar® US Market IndexSM, a broad market index that represents approximately 97% of the market capitalization of publicly traded U.S. stocks. The Underlying Index is composed of qualified income-paying securities that are screened for superior company quality and financial health as determined by Morningstar, Inc.'s (“Morningstar” or the “Index Provider”) proprietary index methodology. Stocks in the Underlying Index represent the top 75 high-yielding stocks meeting the screening requirements. The Morningstar index methodology determines “company quality” in accordance with the Morningstar Economic MoatTM rating system, in which companies are assigned a moat rating of “none,”“narrow” or “wide” based on the prospect of earning above average returns on capital and the strength of the company’s competitive advantage. Additionally, companies are screened for “financial health” using Morningstar’s Distance to Default measure, a quantitative option pricing approach that estimates a company’s probability of default. To qualify for inclusion in the Underlying Index, constituents must have a Morningstar Economic Moat rating of “narrow” or “wide” and have a Morningstar Distance to Default score in the top 50% of eligible dividend-paying companies within their sector. Companies that are not assigned a Morningstar Economic Moat rating must have a Morningstar Distance to Default score in the top 30% of eligible dividend-paying companies within their sector. Additionally, each constituent’s dividend must be deemed to be qualified income. The Underlying Index may include large-, mid-, and small-capitalization companies. As of April 30, 2026, a significant portion of the Underlying Index was represented by securities of companies in the consumer goods and services, energy, and healthcare industries or sectors. The components of the Underlying Index are likely to change over time. The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund. BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities or other instruments intended to collectively have an investment profile similar to that of an applicable underlying index. The instruments selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of an applicable underlying index. The Fund may or may not hold all of the components of the Underlying Index. The Fund may use derivatives to gain or reduce exposure to the components of the Underlying Index or exposure to one or more market risk factors associated with such components. Subject to the limits described herein, the Fund may purchase and hold cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, and may also purchase and hold instruments not included in the Underlying Index when BFA believes that such instruments will help the Fund track the performance of the Underlying Index over time, including in light of expected liquidity or trading costs, anticipated additions to or deletions from the Underlying Index, or other reasons as determined by BFA. In accordance with Rule 35d-1 under the Investment Company Act of 1940, as amended (the “1940 Act”), under normal circumstances, the Fund will not invest less than 80% of the value of its net assets, plus the amount of any borrowings for investment purposes, in components of its Underlying Index. Investments in derivatives and other investments will be counted toward the Fund's 80% investment policy to the extent that they provide exposure to the components of its Underlying Index or exposure to one or more market risk factors associated with such components. The Fund's 80% investment policy may be changed by the Trust's Board of Trustees (the “Board”) upon 60 days' notice to shareholders. The Fund may lend securities representing up to one-third of the value of the Fund’s total assets (including the value of any collateral received). The Underlying Index is sponsored by Morningstar, which is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the components of the Underlying Index and publishes information regarding the market value of the Underlying Index. Industry Concentration Policy. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.
Strategy Portfolio Concentration [Text]	Industry Concentration Policy. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.

The Fund seeks to track the investment results of the Morningstar® Dividend Yield Focus IndexSM (the “Underlying Index”), which offers exposure to high quality U.S.-domiciled companies that have had strong financial health and an ability to sustain above average dividend payouts. The Underlying Index is a subset of the Morningstar® US Market IndexSM, a broad market index that represents approximately 97% of the market capitalization of publicly traded U.S. stocks. The Underlying Index is composed of qualified income-paying securities that are screened for superior company quality and financial health as determined by Morningstar, Inc.'s (“Morningstar” or the “Index Provider”) proprietary index methodology. Stocks in the Underlying Index represent the top 75 high-yielding stocks meeting the screening requirements. The Morningstar index methodology determines “company quality” in accordance with the Morningstar Economic MoatTM rating system, in which companies are assigned a moat rating of “none,”“narrow” or “wide” based on the prospect of earning above average returns on capital and the strength of the company’s competitive advantage. Additionally, companies are screened for “financial health” using Morningstar’s Distance to Default measure, a quantitative option pricing approach that estimates a company’s probability of default. To qualify for inclusion in the Underlying Index, constituents must have a Morningstar Economic Moat rating of “narrow” or “wide” and have a Morningstar Distance to Default score in the top 50% of eligible dividend-paying companies within their sector. Companies that are not assigned a Morningstar Economic Moat rating must have a Morningstar Distance to Default score in the top 30% of eligible dividend-paying companies within their sector. Additionally, each constituent’s dividend must be deemed to be qualified income.

The Fund seeks to track the investment results of the Underlying Index before fees and expenses of the Fund. BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities or other instruments intended to collectively have an investment profile similar to that of an applicable underlying index. The instruments selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of an applicable underlying index. The Fund may or may not hold all of the components of the Underlying Index. The Fund may use derivatives to gain or reduce exposure to the components of the Underlying Index or exposure to one or more market risk factors associated with such components. Subject to the limits described herein, the Fund may purchase and hold cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates, and may also purchase and hold instruments not included in the Underlying Index when BFA believes that such instruments will help the Fund track the performance of the Underlying Index over time, including in light of expected liquidity or trading costs, anticipated additions to or deletions from the Underlying Index, or other reasons as determined by BFA.

In accordance with Rule 35d-1 under the Investment Company Act of 1940, as amended (the “1940 Act”), under normal circumstances, the Fund will not invest less than 80% of the value of its net assets, plus the amount of any borrowings for investment purposes, in components of its Underlying Index. Investments in derivatives and other investments will be counted toward the Fund's 80% investment policy to the extent that they provide exposure to the components of its Underlying Index or exposure to one or more market risk factors associated with such components. The Fund's 80% investment policy may be changed by the Trust's Board of Trustees (the “Board”) upon 60 days' notice to shareholders.

Industry Concentration Policy. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.