v3.26.1
Shareholder Report
6 Months Ended
Apr. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name iShares U.S. ETF Trust
Entity Central Index Key 0001524513
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2026
C000113876 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Short Duration Bond Active ETF
Class Name iShares Short Duration Bond Active ETF
Trading Symbol NEAR
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Short Duration Bond Active ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Short Duration Bond Active ETF $12 0.25%(a)
(a)
Annualized.
Expenses Paid, Amount $ 12
Expense Ratio, Percent 0.25% [1]
Net Assets $ 4,326,028,831
Holdings Count | Holding 1,605
Investment Company Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $4,326,028,831
Number of Portfolio Holdings 1,605
Portfolio Turnover Rate 42%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Investment Type Percent of Total
Investments(a)
Corporate Bonds & Notes 36.3 %
U.S. Government & Agency Obligations 32.3 %
Collateralized Mortgage Obligations 17.9 %
Asset-Backed Securities 12.3 %
Foreign Government Obligations 0.9 %
Investment Companies 0.2 %
Municipal Debt Obligations 0.1 %
Floating Rate Loan Interests 0.0 %(b)
Credit quality allocation
Moody's Credit Rating* Percent of Total
Investments(a)
Aaa 10.6 %
Aa 35.5 %
A 14.3 %
Baa 14.9 %
Ba 4.2 %
B 1.8 %
Caa 0.2 %
Not Rated 18.5 %
(a)
Excludes money market funds.
(b)
Rounds to less than 0.1%.
*
Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Quality Explanation [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Ratings Selection [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization.
C000125661 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Ultra Short Duration Bond Active ETF
Class Name iShares Ultra Short Duration Bond Active ETF
Trading Symbol ICSH
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Ultra Short Duration Bond Active ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Ultra Short Duration Bond Active ETF $4 0.08%(a)
(a)
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [2]
Net Assets $ 7,276,319,700
Holdings Count | Holding 377
Investment Company Portfolio Turnover 22.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $7,276,319,700
Number of Portfolio Holdings 377
Portfolio Turnover Rate 22%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Investment Type Percent of Total
Investments(a)
Corporate Bonds & Notes 38.9 %
Commercial Paper 24.1 %
Certificates of Deposit 14.8 %
Asset-Backed Securities 11.2 %
Repurchase Agreements 8.3 %
U.S. Government & Agency Obligations 2.4 %
Municipal Debt Obligations 0.3 %
Credit quality allocation
Moody's Credit Rating* Percent of Total
Investments(a)
Aaa 5.5 %
Aa 18.3 %
A 37.0 %
Baa 8.7 %
Not Rated 30.5 %
(a)
Excludes money market funds.
*
Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Quality Explanation [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Ratings Selection [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization.
C000132817 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Interest Rate Hedged Corporate Bond ETF
Class Name iShares Interest Rate Hedged Corporate Bond ETF
Trading Symbol LQDH
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Interest Rate Hedged Corporate Bond ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Interest Rate Hedged Corporate Bond ETF $5(a) 0.10%(a)(b)
(a)
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. 
(b)
Annualized.
Expenses Paid, Amount $ 5 [3]
Expense Ratio, Percent 0.10% [3],[4]
Net Assets $ 505,777,128
Holdings Count | Holding 178
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $505,777,128
Number of Portfolio Holdings 178
Portfolio Turnover Rate 0%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Investment Companies 94.0 %
Short-term Investments 50.7 %
Swaps, net cumulative appreciation 5.2 %
Other assets less liabilities (49.9 )%
Credit quality allocation (of the underlying fund)(a)
Credit Rating(b) Percent of Total
Investments(c)
Aaa 2.2 %
Aa 9.8 %
A 47.6 %
Baa 37.9 %
Ba 1.9 %
Not Rated 0.6 %
(a)
The underlying fund is iShares iBoxx $ Investment Grade Corporate Bond ETF.
(b)
Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
(c)
Excludes money market funds.
Credit Quality Explanation [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Ratings Selection [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization.
C000132818 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Interest Rate Hedged High Yield Bond ETF
Class Name iShares Interest Rate Hedged High Yield Bond ETF
Trading Symbol HYGH
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Interest Rate Hedged High Yield Bond ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Interest Rate Hedged High Yield Bond ETF $3(a) 0.05%(a)(b)
(a)
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.
(b)
Annualized.
Expenses Paid, Amount $ 3 [5]
Expense Ratio, Percent 0.05% [5],[6]
Net Assets $ 484,767,484
Holdings Count | Holding 174
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $484,767,484
Number of Portfolio Holdings 174
Portfolio Turnover Rate 0%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Investment Companies 94.4 %
Short-term Investments 49.8 %
Swaps, net cumulative appreciation 0.6 %
Other assets less liabilities (44.8 )%
Credit quality allocation (of the underlying fund)(a)
Credit Rating(b) Percent of Total
Investments(c)
Baa 1.7 %
Ba 46.8 %
B 39.1 %
Caa 10.1 %
Ca 0.5 %
Not Rated 1.8 %
(a)
The underlying fund is iShares iBoxx $ High Yield Corporate Bond ETF.
(b)
Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
(c)
Excludes money market funds.
Credit Quality Explanation [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Ratings Selection [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization.
C000137261 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Interest Rate Hedged Long-Term Corporate Bond ETF
Class Name iShares Interest Rate Hedged Long-Term Corporate Bond ETF
Trading Symbol IGBH
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Interest Rate Hedged Long-Term Corporate Bond ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Interest Rate Hedged Long-Term Corporate Bond ETF $5(a) 0.10%(a)(b)
(a)
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.
(b)
Annualized.
Expenses Paid, Amount $ 5 [7]
Expense Ratio, Percent 0.10% [7],[8]
Net Assets $ 170,761,443
Holdings Count | Holding 277
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $170,761,443
Number of Portfolio Holdings 277
Portfolio Turnover Rate 0%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Investment Companies 92.7 %
Short-term Investments 48.6 %
Swaps, net cumulative appreciation 5.7 %
Other assets less liabilities (47.0 )%
Credit quality allocation (of the underlying fund)(a)
Credit Rating(b) Percent of Total
Investments(c)
Aaa 2.6 %
Aa 12.5 %
A 42.6 %
Baa 39.6 %
Ba 1.3 %
Not Rated 1.4 %
(a)
The underlying fund is iShares 10+ Year Investment Grade Corporate Bond ETF.
(b)
Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
(c)
Excludes money market funds.
Credit Quality Explanation [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Ratings Selection [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization.
C000139416 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares GSCI Commodity Dynamic Roll Strategy ETF
Class Name iShares GSCI Commodity Dynamic Roll Strategy ETF
Trading Symbol COMT
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares GSCI Commodity Dynamic Roll Strategy ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 GSCI Commodity Dynamic Roll Strategy ETF $28 0.47%(a)
(a)
Annualized.
Expenses Paid, Amount $ 28
Expense Ratio, Percent 0.47% [9]
Net Assets $ 1,160,582,105
Holdings Count | Holding 170
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $1,160,582,105
Number of Portfolio Holdings 170
Portfolio Turnover Rate 0%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Commercial Paper 45.6 %
Certificates of Deposit 16.8 %
Money Market Funds 15.5 %
U.S. Treasury Obligations 13.8 %
Futures 11.5 %
Cash 8.6 %
Other assets, less liabilities (11.8 )%
Commodity linked futures
Sector Exposure Percent of
Notional Amount
Energy Futures 57.4 %
Agriculture Futures 12.6 %
Industrial Metals Futures 11.5 %
Livestock Futures 9.5 %
Gold Futures 8.0 %
Precious Metals Futures 1.0 %
C000189608 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Inflation Hedged Corporate Bond ETF
Class Name iShares Inflation Hedged Corporate Bond ETF
Trading Symbol LQDI
Security Exchange Name CboeBZX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Inflation Hedged Corporate Bond ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Inflation Hedged Corporate Bond ETF $2(a) 0.05%(a)(b)
(a)
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. 
(b)
Annualized.
Expenses Paid, Amount $ 2 [10]
Expense Ratio, Percent 0.05% [10],[11]
Net Assets $ 70,115,442
Holdings Count | Holding 120
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $70,115,442
Number of Portfolio Holdings 120
Portfolio Turnover Rate 1%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Investment Companies 94.0 %
Short-term Investments 47.0 %
Swaps, net cumulative appreciation 4.9 %
Other assets less liabilities (45.9 )%
Credit quality allocation (of the underlying fund)(a)
Credit Rating(b) Percent of Total
Investments(c)
Aaa 2.2 %
Aa 9.8 %
A 47.6 %
Baa 37.9 %
Ba 1.9 %
Not Rated 0.6 %
(a)
The underlying fund is iShares iBoxx $ Investment Grade Corporate Bond ETF.
(b)
Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
(c)
Excludes money market funds.
Credit Quality Explanation [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Ratings Selection [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization.
C000198581 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Bloomberg Roll Select Commodity Strategy ETF
Class Name iShares Bloomberg Roll Select Commodity Strategy ETF
Trading Symbol CMDY
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Bloomberg Roll Select Commodity Strategy ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Bloomberg Roll Select Commodity Strategy ETF $15 0.27%(a)
(a)
Annualized.
Expenses Paid, Amount $ 15
Expense Ratio, Percent 0.27% [12]
Net Assets $ 537,004,852
Holdings Count | Holding 76
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $537,004,852
Number of Portfolio Holdings 76
Portfolio Turnover Rate 0%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Commercial Paper 47.3 %
U.S. Treasury Obligations 29.7 %
Money Market Funds 15.7 %
Futures 6.2 %
Cash 8.1 %
Other assets, less liabilities (7.0 )%
Commodity exposure
Sector Exposure(a) Percent of
Exposure
Energy Futures 39.3 %
Agriculture Futures 26.6 %
Precious Metals Futures 15.5 %
Industrial Metals Futures 13.5 %
Livestock Futures 5.1 %
(a)
Represents the sector allocation of the Bloomberg Roll Select Commodity Total Return Index.
C000236575 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Interest Rate Hedged U.S. Aggregate Bond ETF
Class Name iShares Interest Rate Hedged U.S. Aggregate Bond ETF
Trading Symbol AGRH
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Interest Rate Hedged U.S. Aggregate Bond ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Interest Rate Hedged U.S. Aggregate Bond ETF $5(a) 0.10%(a)(b)
(a)
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. 
(b)
Annualized.
Expenses Paid, Amount $ 5 [13]
Expense Ratio, Percent 0.10% [13],[14]
Net Assets $ 5,240,414
Holdings Count | Holding 95
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $5,240,414
Number of Portfolio Holdings 95
Portfolio Turnover Rate 0%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Investment Companies 93.3 %
Short-term Investments 3.6 %
Swaps, net cumulative appreciation 3.4 %
Other assets less liabilities (0.3 )%
Credit quality allocation (of the underlying fund)(a)
Credit Rating(b) Percent of Total
Investments(c)
Aaa 26.6 %
Aa 49.8 %
A 11.4 %
Baa 11.0 %
Ba 0.4 %
Not Rated 0.8 %
(a)
The underlying fund is iShares Core U.S. Aggregate Bond ETF.
(b)
Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
(c)
Excludes money market funds.
Credit Quality Explanation [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization. Moody’s credit ratings are opinions of the credit quality of individual obligations or of an issuer’s general creditworthiness. Investment grade ratings are credit ratings of Baa or higher. Below investment grade ratings are credit ratings of Ba or lower. Unrated investments do not necessarily indicate low credit quality. Credit quality ratings are subject to change.
Credit Ratings Selection [Text Block] Credit quality ratings shown reflect the ratings assigned by Moody’s Investors Service (“Moody’s”), a widely used independent, nationally recognized statistical rating organization.
C000242839 [Member]  
Shareholder Report [Line Items]  
Fund Name iShares Transition-Enabling Metals ETF
Class Name iShares Transition-Enabling Metals ETF
Trading Symbol TMET
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about iShares Transition-Enabling Metals ETF (the “Fund”) for the period of November 1, 2025 to April 30, 2026.
Shareholder Report Annual or Semi-Annual semi-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 six months?
(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 Transition-Enabling Metals ETF $24 0.43%(a)
(a)
Annualized.
Expenses Paid, Amount $ 24
Expense Ratio, Percent 0.43% [15]
Net Assets $ 27,899,425
Holdings Count | Holding 59
Investment Company Portfolio Turnover 0.00%
Additional Fund Statistics [Text Block]
Key Fund statistics
Net Assets $27,899,425
Number of Portfolio Holdings 59
Portfolio Turnover Rate 0%
Holdings [Text Block]
What did the Fund invest in?
(as of April 30, 2026)
Portfolio composition
Asset Type Percent of
Net Assets
Commercial Paper 34.8 %
Money Market Funds 30.3 %
U.S. Treasury Obligations 16.0 %
Certificates of Deposit 8.0 %
Cash 7.3 %
Futures (3.0 )%
Other assets, less liabilities 6.6 %
Commodity linked futures
Sector Exposure Percent of
Notional Amount
Industrial Metals Futures 64.7 %
Precious Metals Futures 34.6 %
[1]
Annualized.
[2] Annualized.
[3]
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. 
[4]
Annualized.
[5] Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.
[6] Annualized.
[7] Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.
[8] Annualized.
[9]
Annualized.
[10]
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. 
[11]
Annualized.
[12]
Annualized.
[13]
Excludes fees and expenses incurred indirectly as a result of investments in underlying funds. 
[14] Annualized.
[15] Annualized.