v3.26.1
Shareholder Report
 12 Months Ended
Apr. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name iShares Trust
Entity Central Index Key 0001100663
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2026
C000012064 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Select Dividend ETF
Class Name iShares Select Dividend ETF
Trading Symbol DVY
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Select Dividend ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Select Dividend ETF $43 0.38%
Expenses Paid, Amount $ 43
Expense Ratio, Percent 0.38%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 25.57%.
  • For the same period, the S&P Total Market Index returned 31.37% and the Dow Jones U.S. Select Dividend Index returned 26.12%.
What contributed to performance?
The financials sector was the largest contributor to the Fund’s return during the reporting period. Both regional and diversified banking firms advanced on improving investor sentiment, resilient credit conditions, stabilizing deposit trends, and a more favorable interest rate environment. Improving market conditions, higher assets under management, and stronger investor sentiment toward capital markets and wealth management businesses benefited the asset management and custody banks segment. Within the utilities sector, electric utilities companies gained on increasing power demand, ongoing grid modernization and electrification investment, and growing electricity needs tied to data center and artificial intelligence related infrastructure development. Meanwhile, the energy sector benefited from resilient oil and fuel demand, and as geopolitical tensions in the Middle East pushed the price of oil significantly higher near the end of the reporting period.
What detracted from performance?
There were no significant detractors from the Fund’s return during the reporting period.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results.
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 25.57 % 9.48 % 10.47 %
S&P Total Market Index 31.37 11.86 14.71
Dow Jones U.S. Select Dividend Index 26.12 9.91 10.91
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 22,856,482,919
Holdings Count | Holding 104
Advisory Fees Paid, Amount $ 78,644,176
Investment Company Portfolio Turnover 23.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $22,856,482,919
Number of Portfolio Holdings 104
Net Investment Advisory Fees $78,644,176
Portfolio Turnover Rate 23%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Financials 24.9 %
Utilities 24.2 %
Consumer Staples 13.5 %
Energy 9.1 %
Consumer Discretionary 6.0 %
Communication Services 6.0 %
Materials 5.8 %
Health Care 5.0 %
Information Technology 3.4 %
Industrials 2.1 %
Ten largest holdings
Security Percent of Total
Investments(a)
Altria Group, Inc. 2.3 %
Pfizer, Inc. 2.2 %
T Rowe Price Group, Inc. 2.0 %
Verizon Communications, Inc. 1.9 %
Prudential Financial, Inc. 1.8 %
ONEOK, Inc. 1.8 %
HP, Inc. 1.6 %
Edison International 1.5 %
LyondellBasell Industries NV, Class A 1.5 %
General Mills, Inc. 1.5 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Altria Group, Inc. 2.3 %
Pfizer, Inc. 2.2 %
T Rowe Price Group, Inc. 2.0 %
Verizon Communications, Inc. 1.9 %
Prudential Financial, Inc. 1.8 %
ONEOK, Inc. 1.8 %
HP, Inc. 1.6 %
Edison International 1.5 %
LyondellBasell Industries NV, Class A 1.5 %
General Mills, Inc. 1.5 %
​(a)
Excludes money market funds.
C000012097 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Morningstar U.S. Equity ETF
Class Name iShares Morningstar U.S. Equity ETF
Trading Symbol ILCB
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Morningstar U.S. Equity ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Material Fund Change Notice [Text Block]
This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Morningstar U.S. Equity ETF $3 0.03%
Expenses Paid, Amount $ 3
Expense Ratio, Percent 0.03%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 30.83%.
  • For the same period, the Morningstar US Market Index returned 30.96% and the Morningstar US Large-Mid Cap Index (Spliced) returned 30.90%.
What contributed to performance?
Information technology stocks were the largest contributors to the Fund’s return during the reporting period. Semiconductor and semiconductor equipment firms were driven by robust demand for artificial intelligence ("AI"), cloud computing, and data center infrastructure. Makers of high-performance AI chips were standout performers, as their products have become essential infrastructure for cloud providers and businesses adopting AI at scale. Technology hardware and equipment stocks also contributed, led by a consumer facing technology company, which gained amid resilient consumer demand and growing services revenue, while specialized component makers benefited from surging AI data center buildout. Further, an interactive media and services company in the communication sector benefited from accelerating ad revenue growth, aided by AI-driven search expansion, alongside expanding cloud services. Industrials stocks added to performance, benefiting from U.S. reshoring initiatives, infrastructure investment, and solid aerospace and defense demand amid ongoing geopolitical uncertainty.
What detracted from performance?
There were no significant detractors from the Fund’s performance during the reporting period.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results.
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 30.83 % 12.52 % 14.58 %
Morningstar US Market Index 30.96 12.08 14.86
Morningstar US Large-Mid Cap Index (Spliced) 30.90 12.54 14.70
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date Nov. 24, 2025
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 1,223,224,164
Holdings Count | Holding 539
Advisory Fees Paid, Amount $ 335,495
Investment Company Portfolio Turnover 8.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $1,223,224,164
Number of Portfolio Holdings 539
Net Investment Advisory Fees $335,495
Portfolio Turnover Rate 8%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Information Technology 34.8 %
Financials 11.9 %
Communication Services 11.2 %
Consumer Discretionary 10.0 %
Industrials 9.2 %
Health Care 8.6 %
Consumer Staples 4.8 %
Energy 3.5 %
Utilities 2.3 %
Materials 1.9 %
Real Estate 1.8 %
Ten largest holdings
Security Percent of Total
Investments(a)
NVIDIA Corp. 7.5 %
Apple Inc. 6.3 %
Microsoft Corp. 4.8 %
Amazon.com, Inc. 4.2 %
Alphabet, Inc., Class A 3.6 %
Broadcom, Inc. 3.1 %
Alphabet, Inc., Class C, NVS 3.1 %
Meta Platforms, Inc., Class A 2.1 %
Tesla, Inc. 1.7 %
Berkshire Hathaway, Inc., Class B 1.4 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
NVIDIA Corp. 7.5 %
Apple Inc. 6.3 %
Microsoft Corp. 4.8 %
Amazon.com, Inc. 4.2 %
Alphabet, Inc., Class A 3.6 %
Broadcom, Inc. 3.1 %
Alphabet, Inc., Class C, NVS 3.1 %
Meta Platforms, Inc., Class A 2.1 %
Tesla, Inc. 1.7 %
Berkshire Hathaway, Inc., Class B 1.4 %
​(a)
Excludes money market funds.
Material Fund Change [Text Block]
Material fund changes
This is a summary of certain changes to the Fund since April 30, 2025. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after April 30, 2026 at blackrock.com/fundreports or upon request by contacting us at 1-800-iShares (1-800-474-2737).
Effective November 24, 2025, the Fund updated its investment policy to indicate that it intends to be “diversified,” as defined in the Investment Company Act of 1940, in approximately the same proportion as its Underlying Index is diversified. Therefore, shareholder approval will not be sought if the Fund crosses from diversified to non‑diversified status due solely to a change in the relative market capitalization or index weighting of the constituents of its Underlying Index.
Material Fund Change Risks Change [Text Block]
Effective November 24, 2025, the Fund updated its investment policy to indicate that it intends to be “diversified,” as defined in the Investment Company Act of 1940, in approximately the same proportion as its Underlying Index is diversified. Therefore, shareholder approval will not be sought if the Fund crosses from diversified to non‑diversified status due solely to a change in the relative market capitalization or index weighting of the constituents of its Underlying Index.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since April 30, 2025. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after April 30, 2026 at blackrock.com/fundreports or upon request by contacting us at 1-800-iShares (1-800-474-2737).
Updated Prospectus Phone Number 1-800-iShares (1-800-474-2737)
Updated Prospectus Web Address blackrock.com/fundreports
C000012099 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Morningstar Value ETF
Class Name iShares Morningstar Value ETF
Trading Symbol ILCV
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Morningstar Value ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Morningstar Value ETF $5 0.04%
Expenses Paid, Amount $ 5
Expense Ratio, Percent 0.04%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 28.10%.
  • For the same period, the Morningstar US Market Index returned 30.96% and the Morningstar US Large-Mid Cap Broad Value Index (Spliced) returned 28.15%.
What contributed to performance?
Information technology stocks were the largest contributors to the Fund’s return during the reporting period. Stocks in the semiconductors segment advanced as sustained artificial intelligence (“AI”)-related data center investment supported demand for high-bandwidth memory chips and advanced semiconductor manufacturing capacity. In the technology hardware, storage, and peripherals segment, a consumer-focused technology hardware company gained on continued demand for its smartphone lineup, while expanding software and subscription services revenue supported profitability and margins. Within the communication services sector, an interactive media and services company advanced on accelerating advertising revenue growth, driven in part by AI-enhanced search capabilities and continued cloud services expansion. Industrials stocks also added to performance, benefiting from U.S. reshoring initiatives, infrastructure investment, and solid aerospace and defense demand amid ongoing geopolitical uncertainty.
What detracted from performance?
During the reporting period, software and services stocks detracted from the Fund’s return, amid concerns over elevated AI infrastructure spending and uncertainty around the timing of investment returns, which pressured valuations.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results.
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 28.10 % 11.65 % 11.61 %
Morningstar US Market Index 30.96 12.08 14.86
Morningstar US Large-Mid Cap Broad Value Index (Spliced) 28.15 11.68 11.76
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 1,240,656,121
Holdings Count | Holding 385
Advisory Fees Paid, Amount $ 447,849
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $1,240,656,121
Number of Portfolio Holdings 385
Net Investment Advisory Fees $447,849
Portfolio Turnover Rate 30%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Information Technology 20.6 %
Financials 17.5 %
Health Care 11.6 %
Industrials 9.6 %
Consumer Discretionary 9.5 %
Communication Services 8.3 %
Consumer Staples 7.9 %
Energy 6.5 %
Utilities 3.8 %
Materials 2.6 %
Real Estate 2.1 %
Ten largest holdings
Security Percent of Total
Investments(a)
Apple Inc. 6.3 %
Microsoft Corp. 5.2 %
Berkshire Hathaway, Inc., Class B 2.7 %
JPMorgan Chase & Co. 2.7 %
Amazon.com, Inc. 2.6 %
Alphabet, Inc., Class A 2.2 %
Exxon Mobil Corp. 2.0 %
Alphabet, Inc., Class C, NVS 1.9 %
Johnson & Johnson 1.7 %
Tesla, Inc. 1.5 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Apple Inc. 6.3 %
Microsoft Corp. 5.2 %
Berkshire Hathaway, Inc., Class B 2.7 %
JPMorgan Chase & Co. 2.7 %
Amazon.com, Inc. 2.6 %
Alphabet, Inc., Class A 2.2 %
Exxon Mobil Corp. 2.0 %
Alphabet, Inc., Class C, NVS 1.9 %
Johnson & Johnson 1.7 %
Tesla, Inc. 1.5 %
​(a)
Excludes money market funds.
C000012195 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Morningstar Mid-Cap Value ETF
Class Name iShares Morningstar Mid-Cap Value ETF
Trading Symbol IMCV
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Morningstar Mid-Cap Value ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Morningstar Mid-Cap Value ETF $7 0.06%
Expenses Paid, Amount $ 7
Expense Ratio, Percent 0.06%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 27.87%.
  • For the same period, the Morningstar US Market Index returned 30.96% and the Morningstar US Mid Cap Broad Value Index (Spliced) returned 27.88%.
What contributed to performance?
Mid-cap value-oriented energy stocks were the largest contributors to the Fund’s return during the reporting period. Companies across the energy value chain benefited from steady U.S. oil production growth and resilient demand, and higher oil prices late in the reporting period amid renewed geopolitical tensions in the Middle East that heightened supply concerns. In the information technology sector, technology hardware and storage companies gained due to improving cloud and artificial intelligence (“AI”)-related infrastructure demand, alongside a recovery in enterprise and data center spending trends. Additionally, stocks in the semiconductors and semiconductor equipment subsector advanced due to improving sentiment toward automotive, industrial, and AI-related chip demand. Financial stocks were supported by stable credit conditions, improving capital markets activity, and solid client asset flows at banking and asset servicing institutions.
What detracted from performance?
During the reporting period, there were no significant detractors from the Fund’s return.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results. 
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 27.87 % 9.40 % 10.48 %
Morningstar US Market Index 30.96 12.08 14.86
Morningstar US Mid Cap Broad Value Index (Spliced) 27.88 9.43 10.65
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 1,033,018,780
Holdings Count | Holding 279
Advisory Fees Paid, Amount $ 511,492
Investment Company Portfolio Turnover 40.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $1,033,018,780
Number of Portfolio Holdings 279
Net Investment Advisory Fees $511,492
Portfolio Turnover Rate 40%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Financials 16.8 %
Industrials 12.6 %
Energy 12.5 %
Utilities 10.0 %
Consumer Staples 8.9 %
Health Care 8.5 %
Consumer Discretionary 8.1 %
Materials 7.3 %
Information Technology 7.2 %
Real Estate 5.6 %
Communication Services 2.5 %
Ten largest holdings
Security Percent of Total
Investments(a)
Newmont Corp. 1.6 %
Williams Cos., Inc. (The) 1.3 %
PNC Financial Services Group, Inc. (The) 1.2 %
FedEx Corp. 1.2 %
U.S. Bancorp 1.2 %
CSX Corp. 1.2 %
SLB Ltd. 1.2 %
Elevance Health, Inc. 1.1 %
United Parcel Service, Inc., Class B 1.1 %
Mondelez International, Inc., Class A 1.1 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Newmont Corp. 1.6 %
Williams Cos., Inc. (The) 1.3 %
PNC Financial Services Group, Inc. (The) 1.2 %
FedEx Corp. 1.2 %
U.S. Bancorp 1.2 %
CSX Corp. 1.2 %
SLB Ltd. 1.2 %
Elevance Health, Inc. 1.1 %
United Parcel Service, Inc., Class B 1.1 %
Mondelez International, Inc., Class A 1.1 %
​(a)
Excludes money market funds.
C000012196 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Morningstar Small-Cap ETF
Class Name iShares Morningstar Small-Cap ETF
Trading Symbol ISCB
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Morningstar Small-Cap ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Morningstar Small-Cap ETF $5 0.04%
Expenses Paid, Amount $ 5
Expense Ratio, Percent 0.04%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 35.32%.
  • For the same period, the Morningstar US Market Index returned 30.96% and the Morningstar US Small Cap Extended Index (Spliced) returned 35.23%.
What contributed to performance?
During the reporting period, small-cap industrials stocks contributed the most to the Fund’s performance, driven by U.S. reshoring efforts, infrastructure spending, and robust aerospace and defense demand, amid heightened geopolitical tensions. Machinery companies benefited from factory automation, electrification and artificial intelligence (“AI”) related data center buildouts. In the information technology sector, technology hardware, storage and peripherals companies advanced as accelerating AI-related infrastructure investment and increasing data center network demand supported spending on optical connectivity, storage, and networking solutions. Meanwhile, semiconductor stocks advanced on continued AI-related investment and improving demand trends. Within the financials sector, regional banks were supported by resilient credit conditions, stabilizing deposit trends, and improving investor sentiment toward the banking sector. Financial services and capital markets companies also advanced, driven by steady capital markets activity, and improving demand for advisory and wealth management services.
What detracted from performance?
There were no significant detractors from the Fund’s return during the reporting period.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results. 
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 35.32 % 5.49 % 9.32 %
Morningstar US Market Index 30.96 12.08 14.86
Morningstar US Small Cap Extended Index (Spliced) 35.23 5.39 9.35
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 268,767,923
Holdings Count | Holding 1,554
Advisory Fees Paid, Amount $ 99,325
Investment Company Portfolio Turnover 30.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $268,767,923
Number of Portfolio Holdings 1,554
Net Investment Advisory Fees $99,325
Portfolio Turnover Rate 30%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Industrials 19.5 %
Financials 17.0 %
Information Technology 13.4 %
Health Care 13.1 %
Consumer Discretionary 11.5 %
Real Estate 7.1 %
Materials 5.5 %
Energy 4.8 %
Consumer Staples 3.1 %
Communication Services 2.5 %
Utilities 2.5 %
Ten largest holdings
Security Percent of Total
Investments(a)
Lumentum Holdings, Inc. 1.1 %
Revolution Medicines, Inc. 0.4 %
Albemarle Corp. 0.4 %
ATI, Inc. 0.3 %
CF Industries Holdings, Inc. 0.3 %
ITT, Inc. 0.3 %
RBC Bearings, Inc. 0.3 %
Coeur Mining, Inc. 0.3 %
MACOM Technology Solutions Holdings, Inc. 0.3 %
Ovintiv, Inc. 0.3 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Lumentum Holdings, Inc. 1.1 %
Revolution Medicines, Inc. 0.4 %
Albemarle Corp. 0.4 %
ATI, Inc. 0.3 %
CF Industries Holdings, Inc. 0.3 %
ITT, Inc. 0.3 %
RBC Bearings, Inc. 0.3 %
Coeur Mining, Inc. 0.3 %
MACOM Technology Solutions Holdings, Inc. 0.3 %
Ovintiv, Inc. 0.3 %
​(a)
Excludes money market funds.
C000042588 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Core U.S. REIT ETF
Class Name iShares Core U.S. REIT ETF
Trading Symbol USRT
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Core U.S. REIT ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Core U.S. REIT ETF $9 0.08%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.08%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 18.67%.
  • For the same period, the Russell 3000 Index returned 31.01% and the FTSE Nareit Equity REITS 40 Act Capped Index (Spliced) returned 18.79%.
What contributed to performance?
During the reporting period, healthcare real estate investment trusts (“REITs”) contributed the most to the Fund’s return, driven by strong demand for senior housing as aging demographics and limited new supply supported occupancy gains, rental rate growth, and improving operating fundamentals. Retail REITs also performed well, benefiting from resilient consumer spending, improving tenant demand, and strong occupancy trends that supported rental income growth and leasing activity at high-quality retail properties. Meanwhile, industrial REITs advanced as demand for warehouse and logistics space was supported by e-commerce growth, supply-chain reshoring initiatives, and rising investment in artificial intelligence-related infrastructure and data center development. Rising cloud computing and artificial intelligence-related demand supported leasing activity, pricing power, and continued investment in data center REITs.
What detracted from performance?
There were no significant detractors from the Fund’s return during the reporting period.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results.
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 18.67 % 5.77 % 6.60 %
Russell 3000 Index 31.01 11.91 14.75
FTSE Nareit Equity REITS 40 Act Capped Index (Spliced) 18.79 5.85 6.67
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 3,789,227,044
Holdings Count | Holding 129
Advisory Fees Paid, Amount $ 2,569,331
Investment Company Portfolio Turnover 12.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $3,789,227,044
Number of Portfolio Holdings 129
Net Investment Advisory Fees $2,569,331
Portfolio Turnover Rate 12%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Industry allocation
Industry Percent of Total
Investments(a)
Specialized REITs 28.3 %
Health Care REITs 18.2 %
Retail REITs 17.5 %
Residential REITs 14.7 %
Industrial REITs 12.1 %
Office REITs 3.4 %
Hotel & Resort REITs 3.1 %
Diversified REITs 2.7 %
Ten largest holdings
Security Percent of Total
Investments(a)
Welltower, Inc. 8.3 %
Prologis, Inc. 7.5 %
Equinix, Inc. 6.5 %
Digital Realty Trust, Inc. 4.5 %
Simon Property Group, Inc. 4.4 %
Realty Income Corp. 4.2 %
Public Storage 4.0 %
Ventas, Inc. 3.6 %
Iron Mountain, Inc. 3.2 %
VICI Properties, Inc. 2.7 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Welltower, Inc. 8.3 %
Prologis, Inc. 7.5 %
Equinix, Inc. 6.5 %
Digital Realty Trust, Inc. 4.5 %
Simon Property Group, Inc. 4.4 %
Realty Income Corp. 4.2 %
Public Storage 4.0 %
Ventas, Inc. 3.6 %
Iron Mountain, Inc. 3.2 %
VICI Properties, Inc. 2.7 %
​(a)
Excludes money market funds.
C000099165 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Core High Dividend ETF
Class Name iShares Core High Dividend ETF
Trading Symbol HDV
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Core High Dividend ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1-800-iShares (1-800-474-2737).
Additional Information Phone Number 1-800-iShares (1-800-474-2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Core High Dividend ETF $9 0.08%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.08%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 23.11%.
  • For the same period, the Morningstar US Market Index returned 30.96% and the Morningstar Dividend Yield Focus Index returned 23.26%.
What contributed to performance?
The energy sector contributed to the Fund’s return during the reporting period, as oil prices experienced strong gains due to Middle East tensions and supply concerns at the Strait of Hormuz. Integrated oil and gas names gained amid resilient oil prices, disciplined capital spending, and strong cash flow generation. Oil and gas exploration and production names also advanced on stronger crude oil and natural gas prices. Biotechnology and pharmaceutical companies within the healthcare sector also contributed, benefiting from resilient demand for branded therapeutics and continued innovation across immunology and oncology portfolios. Additionally, as large pharmaceutical firms faced upcoming patent expirations on key drugs, many pursued acquisitions of emerging biotechnology companies to strengthen their development pipelines. The information technology sector increased on continued enterprise networking investment, resilient demand for analog and connectivity chips, and growing support from artificial intelligence driven infrastructure buildouts.
What detracted from performance?
There were no significant detractors from the Fund’s return during the reporting period.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results.
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 23.11 % 11.41 % 9.60 %
Morningstar US Market Index 30.96 12.08 14.86
Morningstar Dividend Yield Focus Index 23.26 11.51 9.69
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 13,564,565,253
Holdings Count | Holding 79
Advisory Fees Paid, Amount $ 9,568,649
Investment Company Portfolio Turnover 65.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $13,564,565,253
Number of Portfolio Holdings 79
Net Investment Advisory Fees $9,568,649
Portfolio Turnover Rate 65%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Consumer Staples 24.1 %
Energy 22.2 %
Health Care 16.5 %
Financials 11.0 %
Utilities 9.3 %
Information Technology 7.6 %
Consumer Discretionary 6.1 %
Industrials 2.0 %
Materials 1.2 %
Ten largest holdings
Security Percent of Total
Investments(a)
Exxon Mobil Corp. 8.4 %
Chevron Corp. 6.4 %
Johnson & Johnson 5.7 %
AbbVie, Inc. 5.5 %
Procter & Gamble Co. (The) 4.5 %
Philip Morris International, Inc. 4.2 %
Home Depot, Inc. (The) 4.1 %
Coca-Cola Co. (The) 3.9 %
Progressive Corp. (The) 3.8 %
Merck & Co., Inc. 3.8 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Exxon Mobil Corp. 8.4 %
Chevron Corp. 6.4 %
Johnson & Johnson 5.7 %
AbbVie, Inc. 5.5 %
Procter & Gamble Co. (The) 4.5 %
Philip Morris International, Inc. 4.2 %
Home Depot, Inc. (The) 4.1 %
Coca-Cola Co. (The) 3.9 %
Progressive Corp. (The) 3.8 %
Merck & Co., Inc. 3.8 %
​(a)
Excludes money market funds.
C000141931 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Core Dividend Growth ETF
Class Name iShares Core Dividend Growth ETF
Trading Symbol DGRO
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Core Dividend Growth ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Core Dividend Growth ETF $9 0.08%
Expenses Paid, Amount $ 9
Expense Ratio, Percent 0.08%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 25.16%.
  • For the same period, the Morningstar US Market Index returned 30.96% and the Morningstar US Dividend Growth Index returned 25.29%.
What contributed to performance?
During the reporting period, stocks in the information technology sector contributed the most to the Fund’s return. Semiconductors and semiconductor equipment companies benefited from continued artificial intelligence (“AI”)-related infrastructure investment, which supported demand for networking semiconductors, advanced chip manufacturing equipment, and high-performance computing solutions. Technology hardware and equipment stocks advanced on continued enterprise infrastructure spending, and growing demand for AI-enabled networking solutions. Within the financials sector, larger diversified banks gained on resilient economic activity, stable credit conditions, and improving capital markets activity, which supported investment banking, trading, and lending trends. Meanwhile, improved investment banking activity, healthy trading volumes, and continued strength in wealth and asset management businesses benefited investment banking and brokerage firms. The industrials sector contributed amid continued investment in infrastructure, electrification, aerospace and defense, and data center-related end markets.
What detracted from performance?
There were no significant detractors from the Fund’s return during the reporting period.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results.
Line Graph [Table Text Block]
Fund performance
Cumulative performance: May 1, 2016 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years 10 Years
Fund NAV 25.16 % 10.63 % 13.31 %
Morningstar US Market Index 30.96 12.08 14.86
Morningstar US Dividend Growth Index 25.29 10.71 13.39
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 39,700,584,575
Holdings Count | Holding 399
Advisory Fees Paid, Amount $ 27,893,360
Investment Company Portfolio Turnover 25.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $39,700,584,575
Number of Portfolio Holdings 399
Net Investment Advisory Fees $27,893,360
Portfolio Turnover Rate 25%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Financials 21.2 %
Information Technology 18.5 %
Health Care 16.4 %
Industrials 11.6 %
Consumer Staples 11.5 %
Utilities 7.0 %
Consumer Discretionary 5.6 %
Energy 5.5 %
Materials 2.6 %
Communication Services 0.1 %
Ten largest holdings
Security Percent of Total
Investments(a)
Broadcom, Inc. 3.3 %
JPMorgan Chase & Co. 3.1 %
Apple Inc. 2.9 %
Microsoft Corp. 2.9 %
Exxon Mobil Corp. 2.9 %
Johnson & Johnson 2.7 %
AbbVie, Inc. 2.5 %
UnitedHealth Group, Inc. 2.3 %
Procter & Gamble Co. (The) 2.1 %
Philip Morris International, Inc. 1.9 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Broadcom, Inc. 3.3 %
JPMorgan Chase & Co. 3.1 %
Apple Inc. 2.9 %
Microsoft Corp. 2.9 %
Exxon Mobil Corp. 2.9 %
Johnson & Johnson 2.7 %
AbbVie, Inc. 2.5 %
UnitedHealth Group, Inc. 2.3 %
Procter & Gamble Co. (The) 2.1 %
Philip Morris International, Inc. 1.9 %
​(a)
Excludes money market funds.
C000194634 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Core Dividend ETF
Class Name iShares Core Dividend ETF
Trading Symbol DIVB
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about iShares Core Dividend ETF (the “Fund”) for the period of May 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at blackrock.com/fundreports. You can also request this information by contacting us at 1‑800‑iShares (1‑800‑474‑2737).
Additional Information Phone Number 1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website blackrock.com/fundreports
Expenses [Text Block]
What were the Fund costs for the last year?
(based on a hypothetical $10,000 investment)
Fund name Costs of a $10,000
investment		 Costs paid as a percentage of a
$10,000 investment
iShares Core Dividend ETF $6 0.05%
Expenses Paid, Amount $ 6
Expense Ratio, Percent 0.05%
Factors Affecting Performance [Text Block]
How did the Fund perform last year?
  • For the reporting period ended April 30, 2026, the Fund returned 27.69%.
  • For the same period, the Morningstar US Market Index returned 30.96% and the Morningstar US Dividend and Buyback Index returned 27.73%.
What contributed to performance?
The information technology sector was the largest contributor to the Fund’s return during the reporting period. Technology hardware and equipment firms advanced on continued enterprise and cloud infrastructure spending, supported by growing demand for networking, storage, and data center solutions tied to artificial intelligence (“AI”)-related investments. Within the semiconductors segment, firms gained on continued investment in AI-related infrastructure and communications equipment. Diversified banks in the financials sector benefited from resilient economic activity, stable credit trends, and improving capital markets activity. The energy sector contributed as oil prices experienced strong gains due to Middle East tensions and supply concerns at the Strait of Hormuz.
What detracted from performance?
IT services firms in the information technology sector detracted from the Fund’s performance during the reporting period. These firms faced negative sentiment due to moderating enterprise spending trends, slower discretionary consulting demand, and investor concerns that generative AI could disrupt portions of traditional IT services and consulting businesses.
The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text] Past performance is not an indication of future results.
Line Graph [Table Text Block]
Fund performance
Cumulative performance: November 7, 2017 through April 30, 2026
Initial investment of $10,000
Fund Performance - Growth of 10K
See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]
Average annual total returns
1 Year 5 Years Since Fund
Inception
Fund NAV 27.69 % 11.34 % 13.13 %
Morningstar US Market Index 30.96 12.08 14.19
Morningstar US Dividend and Buyback Index 27.73 11.46 13.33
Performance Inception Date Nov. 07, 2017
No Deduction of Taxes [Text Block] Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block] Visit iShares.com for more recent performance information.
Net Assets $ 1,350,604,267
Holdings Count | Holding 405
Advisory Fees Paid, Amount $ 545,632
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $1,350,604,267
Number of Portfolio Holdings 405
Net Investment Advisory Fees $545,632
Portfolio Turnover Rate 38%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Sector allocation
Sector Percent of Total
Investments(a)
Information Technology 25.9 %
Financials 19.0 %
Health Care 10.3 %
Consumer Staples 9.4 %
Industrials 9.3 %
Energy 8.5 %
Consumer Discretionary 5.0 %
Communication Services 4.7 %
Real Estate 3.4 %
Utilities 2.3 %
Materials 2.2 %
Ten largest holdings
Security Percent of Total
Investments(a)
Cisco Systems, Inc. 5.1 %
QUALCOMM, Inc. 4.5 %
Exxon Mobil Corp. 4.0 %
JPMorgan Chase & Co. 3.4 %
Texas Instruments, Inc. 2.7 %
Accenture PLC, Class A 2.1 %
Dell Technologies, Inc., Class C 2.0 %
Wells Fargo & Co. 2.0 %
UnitedHealth Group, Inc. 1.9 %
Bank of America Corp. 1.9 %
​(a)
Excludes money market funds.
Largest Holdings [Text Block]
Ten largest holdings
Security Percent of Total
Investments(a)
Cisco Systems, Inc. 5.1 %
QUALCOMM, Inc. 4.5 %
Exxon Mobil Corp. 4.0 %
JPMorgan Chase & Co. 3.4 %
Texas Instruments, Inc. 2.7 %
Accenture PLC, Class A 2.1 %
Dell Technologies, Inc., Class C 2.0 %
Wells Fargo & Co. 2.0 %
UnitedHealth Group, Inc. 1.9 %
Bank of America Corp. 1.9 %
​(a)
Excludes money market funds.