iShares Gold Strategy ETF (IAUF) N-CSR3 Oct 24Certified annual shareholder report (management investment company)Financial data

Company Profile

Form N-CSR Cover

Form N-CSR Cover	12 Months Ended
Form N-CSR Cover	Jul. 31, 2024
Shareholder Report [Line Items]
Document Type	N-CSR
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	Jul. 31, 2024

Shareholder Report

Shareholder Report	12 Months Ended
Shareholder Report	Jul. 31, 2024 USD ($) Holding
Shareholder Report [Line Items]
Document Type	N-CSR
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	Jul. 31, 2024
C000198375
Shareholder Report [Line Items]
Fund Name	iShares U.S. Consumer Focused ETF
Trading Symbol	IEDI
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares U.S. Consumer Focused ETF (the “Fund”) for the period of August 1, 2023 to July 31, 2024.
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
Additional Information Phone Number	1-800-iShares (1-800-474-2737)
Additional Information Website	<span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: justify;">blackrock.com/fundreports</span></span>" id="sjs-B19"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: justify;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: justify;">blackrock.com/fundreports</span></span>
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 U.S. Consumer Focused ETF $20 0.18%
Expenses Paid, Amount	$ 20
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? The consumer discretionary sector was driven by inflation expectations during the reporting period, beginning with persistent inflation, rapid rate hikes, and the potential for a U.S. recession then rallying on dovish remarks from the U.S. Federal Reserve Bank at the end of 2023. However, the performance of consumer discretionary stocks lagged that of the broader market as inflation proved to be stickier than expected, and consumer confidence failed to recover in line with investor confidence. Investors’ persistent enthusiasm for artificial intelligence (“AI”) was the primary driver of market returns. While the enthusiasm may have contributed to broad stock price increases, the largest increases were reserved for big technology companies that were best positioned to harness the new technology, leaving less exposed and smaller-capitalized companies to underperform. What contributed to performance? Within consumer discretionary stocks, a preference for experiences over goods led select fast-casual food chains to deliver strong performance. The influence of generative AI helped companies with a greater claim to benefit from the technology regardless of their main business. A large technology company with services ranging from e-commerce to cloud computing particularly gained due to its position as a leader in the AI space. What detracted from performance? An athletic gear company was the largest detractor from the Fund’s return during the reporting period. The company’s stock price has been challenged as investors preferred to spend their discretionary dollars on experiences over physical goods. Following similar trends, a budget retailer was the second largest detractor.
Line Graph [Table Text Block]	Fund performance Cumulative performance: March 21, 2018 through July 31, 2024 Initial investment of $10,000 Fund S&P Total Market Index Mar 18 9,884 9,736 Apr 18 10,112 9,770 May 18 10,216 10,046 Jun 18 10,538 10,113 Jul 18 10,796 10,451 Aug 18 11,415 10,814 Sep 18 11,506 10,832 Oct 18 10,743 10,029 Nov 18 10,864 10,230 Dec 18 9,978 9,276 Jan 19 10,747 10,075 Feb 19 11,043 10,429 Mar 19 11,391 10,579 Apr 19 11,848 11,000 May 19 11,024 10,290 Jun 19 11,845 11,011 Jul 19 12,062 11,173 Aug 19 12,058 10,947 Sep 19 12,285 11,136 Oct 19 12,350 11,373 Nov 19 12,617 11,803 Dec 19 12,936 12,143 Jan 20 12,849 12,128 Feb 20 11,890 11,135 Mar 20 10,356 9,597 Apr 20 11,984 10,870 May 20 12,810 11,453 Jun 20 13,198 11,717 Jul 20 14,247 12,379 Aug 20 15,637 13,269 Sep 20 15,261 12,781 Oct 20 14,873 12,508 Nov 20 16,399 14,037 Dec 20 16,779 14,667 Jan 21 16,494 14,620 Feb 21 16,637 15,088 Mar 21 17,446 15,613 Apr 21 18,493 16,415 May 21 18,128 16,489 Jun 21 18,709 16,907 Jul 21 18,994 17,198 Aug 21 19,367 17,690 Sep 21 18,514 16,887 Oct 21 19,578 18,021 Nov 21 19,817 17,756 Dec 21 20,371 18,430 Jan 22 18,694 17,324 Feb 22 18,130 16,888 Mar 22 18,525 17,435 Apr 22 17,164 15,863 May 22 16,151 15,831 Jun 22 14,757 14,500 Jul 22 16,592 15,860 Aug 22 16,121 15,261 Sep 22 14,825 13,838 Oct 22 15,824 14,968 Nov 22 16,809 15,758 Dec 22 15,659 14,831 Jan 23 16,909 15,865 Feb 23 16,177 15,498 Mar 23 16,489 15,905 Apr 23 16,903 16,065 May 23 16,391 16,135 Jun 23 17,647 17,240 Jul 23 18,242 17,861 Aug 23 17,873 17,511 Sep 23 16,867 16,672 Oct 23 16,691 16,224 Nov 23 18,148 17,747 Dec 23 19,458 18,697 Jan 24 19,625 18,904 Feb 24 21,358 19,933 Mar 24 21,916 20,577 Apr 24 20,534 19,669 May 24 21,062 20,603 Jun 24 21,498 21,244 Jul 24 21,629 21,635 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns Average Annual Total Returns 1 Year 5 Years Since Fund Inception Fund NAV ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 18.57 % 12.39 % 12.89 % Fund Market ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 18.77 12.38 12.88 S&P Total Market Index ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 21.10 14.13 12.90
AssetsNet	$ 21,997,586
Holdings Count \| Holding	203
Advisory Fees Paid, Amount	$ 36,584
InvestmentCompanyPortfolioTurnover	15%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ $21,997,586 Number of Portfolio Holdings ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 203 Net Investment Advisory Fees ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ $36,584 Portfolio Turnover Rate ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 15%
Holdings [Text Block]	Industry allocation Ten largest holdings Industry Percent of TotaI Investments Footnote Reference Specialty Retail ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 34.7 % Consumer Staples Distribution & Retail ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 22.8 Hotels, Restaurants & Leisure ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 16.9 Broadline Retail ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9.2 Textiles, Apparel & Luxury Goods ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 3.3 Financial Services ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.1 Commercial Services & Supplies ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 1.3 Trading Companies & Distributors ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 1.2 Ground Transportation ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 1.0 Interactive Media & Services ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 0.9 Other Footnote Reference ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 6.6 Security Percent of Total Investments Footnote Reference Home Depot, Inc. (The) ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 12.2 % Costco Wholesale Corp. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 8.5 Amazon.com, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 8.3 Walmart, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 7.0 Lowe's Cos., Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4.2 TJX Cos., Inc. (The) ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4.2 Chipotle Mexican Grill, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 3.4 O'Reilly Automotive, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.5 Target Corp. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.2 Ross Stores, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.1 Footnote Description Footnote (a) Excludes money market funds. Footnote (b) Ten largest industries are presented. Additional industries are found in Other.
C000198380
Shareholder Report [Line Items]
Fund Name	iShares U.S. Tech Independence Focused ETF
Trading Symbol	IETC
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares U.S. Tech Independence Focused ETF (the “Fund”) for the period of August 1, 2023 to July 31, 2024.
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
Additional Information Phone Number	1-800-iShares (1-800-474-2737)
Additional Information Website	<span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: justify;">blackrock.com/fundreports</span></span>" id="sjs-B41"><span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: justify;"><span style="font-weight: 700; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: justify;">blackrock.com/fundreports</span></span>
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 U.S. Tech Independence Focused ETF $21 0.18%
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.18%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Generative artificial intelligence (“AI”) was a significant driver of market returns during the reporting period, particularly among firms providing the hardware or software that empowers AI delivery and utilization. These firms have been led by large technology companies, Mega-cap companies accounted for a vast majority of the sector’s gains relative to mid- and smaller-capitalized companies. Technology firms continued to receive fiscal support from legislation passed in 2022, empowering the United States to capitalize on the emergence of new technologies and deliver self-sufficiency in innovation and production. The U.S. Federal Reserve Bank (“Fed”) kept interest rates steady throughout the reporting period. A global risk-on rally started when Chairman Powell signaled rates had peaked at the end of 2023, fueling hopes for a soft landing (an economic outcome in which inflation slows to the Fed’s 2% target while growth remains positive). What contributed to performance? The two largest individual contributors to the Fund’s return during the reporting period were U.S. companies offering semiconductor and infrastructure software solutions. Both companies benefited from the ongoing AI trend as developers of the chips and software used in emerging technology development. What detracted from performance? Two of the largest individual detractors from the Fund’s return during the reporting period were data storage and management solution providers. Like their peers supplying the tools to harness AI, their stocks traded at high multiples, but weakened earnings guidance provided by the firms during the period caused stock prices to fall.
Line Graph [Table Text Block]	Fund performance Cumulative performance: March 21, 2018 through July 31, 2024 Initial investment of $10,000 Fund S&P Total Market Index Mar 18 9,598 9,736 Apr 18 9,699 9,770 May 18 10,321 10,046 Jun 18 10,351 10,113 Jul 18 10,600 10,451 Aug 18 11,418 10,814 Sep 18 11,379 10,832 Oct 18 10,277 10,029 Nov 18 10,237 10,230 Dec 18 9,396 9,276 Jan 19 10,283 10,075 Feb 19 10,762 10,429 Mar 19 11,222 10,579 Apr 19 11,951 11,000 May 19 11,042 10,290 Jun 19 11,828 11,011 Jul 19 12,219 11,173 Aug 19 11,942 10,947 Sep 19 11,959 11,136 Oct 19 12,331 11,373 Nov 19 12,949 11,803 Dec 19 13,378 12,143 Jan 20 13,985 12,128 Feb 20 13,079 11,135 Mar 20 11,949 9,597 Apr 20 13,796 10,870 May 20 14,782 11,453 Jun 20 15,717 11,717 Jul 20 16,759 12,379 Aug 20 18,509 13,269 Sep 20 17,484 12,781 Oct 20 16,977 12,508 Nov 20 18,758 14,037 Dec 20 19,606 14,667 Jan 21 19,503 14,620 Feb 21 19,849 15,088 Mar 21 20,044 15,613 Apr 21 21,498 16,415 May 21 21,234 16,489 Jun 21 22,729 16,907 Jul 21 23,503 17,198 Aug 21 24,541 17,690 Sep 21 23,063 16,887 Oct 21 24,802 18,021 Nov 21 25,042 17,756 Dec 21 25,444 18,430 Jan 22 23,406 17,324 Feb 22 22,268 16,888 Mar 22 22,963 17,435 Apr 22 19,863 15,863 May 22 19,365 15,831 Jun 22 17,673 14,500 Jul 22 19,739 15,860 Aug 22 18,686 15,261 Sep 22 16,522 13,838 Oct 22 17,194 14,968 Nov 22 18,198 15,758 Dec 22 17,122 14,831 Jan 23 18,523 15,865 Feb 23 18,302 15,498 Mar 23 19,831 15,905 Apr 23 19,806 16,065 May 23 21,876 16,135 Jun 23 23,214 17,240 Jul 23 23,964 17,861 Aug 23 24,019 17,511 Sep 23 22,509 16,672 Oct 23 22,314 16,224 Nov 23 25,093 17,747 Dec 23 26,411 18,697 Jan 24 27,471 18,904 Feb 24 29,432 19,933 Mar 24 30,041 20,577 Apr 24 28,216 19,669 May 24 29,293 20,603 Jun 24 31,901 21,244 Jul 24 31,686 21,635 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns Average Annual Total Returns 1 Year 5 Years Since Fund Inception Fund NAV ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 32.22 % 20.99 % 19.87 % Fund Market ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 32.51 20.97 19.88 S&P Total Market Index ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 21.10 14.13 12.90
AssetsNet	$ 276,246,175
Holdings Count \| Holding	126
Advisory Fees Paid, Amount	$ 364,005
InvestmentCompanyPortfolioTurnover	31%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ $276,246,175 Number of Portfolio Holdings ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 126 Net Investment Advisory Fees ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ $364,005 Portfolio Turnover Rate ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 31%
Holdings [Text Block]	Industry allocation Ten largest holdings Industry Percent of TotaI Investments Footnote Reference Software ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 29.6 % Semiconductors & Semiconductor Equipment ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 20.2 IT Services ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9.9 Broadline Retail ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9.5 Interactive Media & Services ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 6.3 Communications Equipment ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4.9 Capital Markets ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4.1 Technology Hardware, Storage & Peripherals ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 3.8 Financial Services ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.5 Professional Services ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.3 Other Footnote Reference ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 6.9 Security Percent of Total Investments Footnote Reference Amazon.com, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9.4 % Broadcom, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9.3 Microsoft Corp. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 9.2 NVIDIA Corp. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 6.1 Salesforce, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 5.3 Accenture plc, Class A ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 5.2 Oracle Corp. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 3.7 Apple, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.5 Alphabet, Inc., Class A ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.4 Cisco Systems, Inc. ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 2.3 Footnote Description Footnote (a) Excludes money market funds. Footnote (b) Ten largest industries are presented. Additional industries are found in Other.

Shareholder Report, Line Graph

Shareholder Report, Line Graph (Details) - USD ($)		12 Months Ended
Shareholder Report, Line Graph (Details) - USD ($)	Mar. 31, 2018	Jul. 31, 2024	Jun. 30, 2024	May 31, 2024	Apr. 30, 2024	Mar. 31, 2024	Feb. 29, 2024	Jan. 31, 2024	Dec. 31, 2023	Nov. 30, 2023	Oct. 31, 2023	Sep. 30, 2023	Aug. 31, 2023	Jul. 31, 2023	Jun. 30, 2023	May 31, 2023	Apr. 30, 2023	Mar. 31, 2023	Feb. 28, 2023	Jan. 31, 2023	Dec. 31, 2022	Nov. 30, 2022	Oct. 31, 2022	Sep. 30, 2022	Aug. 31, 2022	Jul. 31, 2022	Jun. 30, 2022	May 31, 2022	Apr. 30, 2022	Mar. 31, 2022	Feb. 28, 2022	Jan. 31, 2022	Dec. 31, 2021	Nov. 30, 2021	Oct. 31, 2021	Sep. 30, 2021	Aug. 31, 2021	Jul. 31, 2021	Jun. 30, 2021	May 31, 2021	Apr. 30, 2021	Mar. 31, 2021	Feb. 28, 2021	Jan. 31, 2021	Dec. 31, 2020	Nov. 30, 2020	Oct. 31, 2020	Sep. 30, 2020	Aug. 31, 2020	Jul. 31, 2020	Jun. 30, 2020	May 31, 2020	Apr. 30, 2020	Mar. 31, 2020	Feb. 29, 2020	Jan. 31, 2020	Dec. 31, 2019	Nov. 30, 2019	Oct. 31, 2019	Sep. 30, 2019	Aug. 31, 2019	Jul. 31, 2019	Jun. 30, 2019	May 31, 2019	Apr. 30, 2019	Mar. 31, 2019	Feb. 28, 2019	Jan. 31, 2019	Dec. 31, 2018	Nov. 30, 2018	Oct. 31, 2018	Sep. 30, 2018	Aug. 31, 2018	Jul. 31, 2018	Jun. 30, 2018	May 31, 2018	Apr. 30, 2018
C000198375
Account Value [Line Items]
Line Graph and Table Measure Name		Fund
Account Value	$ 9,884	$ 21,629	$ 21,498	$ 21,062	$ 20,534	$ 21,916	$ 21,358	$ 19,625	$ 19,458	$ 18,148	$ 16,691	$ 16,867	$ 17,873	$ 18,242	$ 17,647	$ 16,391	$ 16,903	$ 16,489	$ 16,177	$ 16,909	$ 15,659	$ 16,809	$ 15,824	$ 14,825	$ 16,121	$ 16,592	$ 14,757	$ 16,151	$ 17,164	$ 18,525	$ 18,130	$ 18,694	$ 20,371	$ 19,817	$ 19,578	$ 18,514	$ 19,367	$ 18,994	$ 18,709	$ 18,128	$ 18,493	$ 17,446	$ 16,637	$ 16,494	$ 16,779	$ 16,399	$ 14,873	$ 15,261	$ 15,637	$ 14,247	$ 13,198	$ 12,810	$ 11,984	$ 10,356	$ 11,890	$ 12,849	$ 12,936	$ 12,617	$ 12,350	$ 12,285	$ 12,058	$ 12,062	$ 11,845	$ 11,024	$ 11,848	$ 11,391	$ 11,043	$ 10,747	$ 9,978	$ 10,864	$ 10,743	$ 11,506	$ 11,415	$ 10,796	$ 10,538	$ 10,216	$ 10,112
C000198380
Account Value [Line Items]
Line Graph and Table Measure Name		Fund
Account Value	9,598	$ 31,686	31,901	29,293	28,216	30,041	29,432	27,471	26,411	25,093	22,314	22,509	24,019	23,964	23,214	21,876	19,806	19,831	18,302	18,523	17,122	18,198	17,194	16,522	18,686	19,739	17,673	19,365	19,863	22,963	22,268	23,406	25,444	25,042	24,802	23,063	24,541	23,503	22,729	21,234	21,498	20,044	19,849	19,503	19,606	18,758	16,977	17,484	18,509	16,759	15,717	14,782	13,796	11,949	13,079	13,985	13,378	12,949	12,331	11,959	11,942	12,219	11,828	11,042	11,951	11,222	10,762	10,283	9,396	10,237	10,277	11,379	11,418	10,600	10,351	10,321	9,699
FR TSR Growth 10k - Benchmark 1
Account Value [Line Items]
Account Value	9,736	21,635	21,244	20,603	19,669	20,577	19,933	18,904	18,697	17,747	16,224	16,672	17,511	17,861	17,240	16,135	16,065	15,905	15,498	15,865	14,831	15,758	14,968	13,838	15,261	15,860	14,500	15,831	15,863	17,435	16,888	17,324	18,430	17,756	18,021	16,887	17,690	17,198	16,907	16,489	16,415	15,613	15,088	14,620	14,667	14,037	12,508	12,781	13,269	12,379	11,717	11,453	10,870	9,597	11,135	12,128	12,143	11,803	11,373	11,136	10,947	11,173	11,011	10,290	11,000	10,579	10,429	10,075	9,276	10,230	10,029	10,832	10,814	10,451	10,113	10,046	9,770
FR TSR Growth 10k - Benchmark 1
Account Value [Line Items]
Account Value	$ 9,736	$ 21,635	$ 21,244	$ 20,603	$ 19,669	$ 20,577	$ 19,933	$ 18,904	$ 18,697	$ 17,747	$ 16,224	$ 16,672	$ 17,511	$ 17,861	$ 17,240	$ 16,135	$ 16,065	$ 15,905	$ 15,498	$ 15,865	$ 14,831	$ 15,758	$ 14,968	$ 13,838	$ 15,261	$ 15,860	$ 14,500	$ 15,831	$ 15,863	$ 17,435	$ 16,888	$ 17,324	$ 18,430	$ 17,756	$ 18,021	$ 16,887	$ 17,690	$ 17,198	$ 16,907	$ 16,489	$ 16,415	$ 15,613	$ 15,088	$ 14,620	$ 14,667	$ 14,037	$ 12,508	$ 12,781	$ 13,269	$ 12,379	$ 11,717	$ 11,453	$ 10,870	$ 9,597	$ 11,135	$ 12,128	$ 12,143	$ 11,803	$ 11,373	$ 11,136	$ 10,947	$ 11,173	$ 11,011	$ 10,290	$ 11,000	$ 10,579	$ 10,429	$ 10,075	$ 9,276	$ 10,230	$ 10,029	$ 10,832	$ 10,814	$ 10,451	$ 10,113	$ 10,046	$ 9,770
iShares U.S. Consumer Focused ETF
Account Value [Line Items]
Line Graph and Table Measure Name	S&P Total Market Index
iShares U.S. Tech Independence Focused ETF
Account Value [Line Items]
Line Graph and Table Measure Name	S&P Total Market Index

Shareholder Report, Average Ann

Shareholder Report, Average Annual Return (Details)		12 Months Ended	60 Months Ended	120 Months Ended
Shareholder Report, Average Annual Return (Details)	Mar. 31, 2018	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024
C000198375
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Fund
Average Annual Return, Percent		18.77%	12.38%	12.88%
C000198380
Average Annual Return [Line Items]
Line Graph and Table Measure Name		Fund
Average Annual Return, Percent		32.51%	20.97%	19.88%
Without Sales Load [Member] \| C000198375
Average Annual Return [Line Items]
Average Annual Return, Percent		18.57%	12.39%	12.89%
Without Sales Load [Member] \| C000198380
Average Annual Return [Line Items]
Average Annual Return, Percent		32.22%	20.99%	19.87%
FR Notes - Benchmark total return 1 year w/o sales charge
Average Annual Return [Line Items]
Average Annual Return, Percent		21.10%
FR Notes - Benchmark total return 5 year
Average Annual Return [Line Items]
Average Annual Return, Percent			14.13%
FR Notes - Benchmark total return 10 year
Average Annual Return [Line Items]
Average Annual Return, Percent				12.90%
FR Notes - Benchmark total return 1 year w/o sales charge
Average Annual Return [Line Items]
Average Annual Return, Percent		21.10%
FR Notes - Benchmark total return 5 year
Average Annual Return [Line Items]
Average Annual Return, Percent			14.13%
FR Notes - Benchmark total return 10 year
Average Annual Return [Line Items]
Average Annual Return, Percent				12.90%
iShares U.S. Consumer Focused ETF
Average Annual Return [Line Items]
Line Graph and Table Measure Name	S&P Total Market Index
iShares U.S. Tech Independence Focused ETF
Average Annual Return [Line Items]
Line Graph and Table Measure Name	S&P Total Market Index

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jul. 31, 2024
C000198375 \| Home Depot, Inc. (The), , , 0
Holdings [Line Items]
Percent of Total Investments	12.20%
C000198375 \| Costco Wholesale Corp., , , 0
Holdings [Line Items]
Percent of Total Investments	8.50%
C000198375 \| Amazon.com, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	8.30%
C000198375 \| Walmart, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	7%
C000198375 \| Lowe's Cos., Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	4.20%
C000198375 \| TJX Cos., Inc. (The), , , 0
Holdings [Line Items]
Percent of Total Investments	4.20%
C000198375 \| Chipotle Mexican Grill, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	3.40%
C000198375 \| O'Reilly Automotive, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	2.50%
C000198375 \| Target Corp., , , 0
Holdings [Line Items]
Percent of Total Investments	2.20%
C000198375 \| Ross Stores, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	2.10%
C000198375 \| Specialty Retail
Holdings [Line Items]
Percent of Total Investments	34.70%
C000198375 \| Consumer Staples Distribution & Retail
Holdings [Line Items]
Percent of Total Investments	22.80%
C000198375 \| Hotels, Restaurants & Leisure
Holdings [Line Items]
Percent of Total Investments	16.90%
C000198375 \| Broadline Retail
Holdings [Line Items]
Percent of Total Investments	9.20%
C000198375 \| Textiles, Apparel & Luxury Goods
Holdings [Line Items]
Percent of Total Investments	3.30%
C000198375 \| Financial Services
Holdings [Line Items]
Percent of Total Investments	2.10%
C000198375 \| Commercial Services & Supplies
Holdings [Line Items]
Percent of Total Investments	1.30%
C000198375 \| Trading Companies & Distributors
Holdings [Line Items]
Percent of Total Investments	1.20%
C000198375 \| Ground Transportation
Holdings [Line Items]
Percent of Total Investments	1%
C000198375 \| Interactive Media & Services
Holdings [Line Items]
Percent of Total Investments	0.90%
C000198375 \| Other Industries
Holdings [Line Items]
Percent of Total Investments	6.60%
C000198380 \| Amazon.com, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	9.40%
C000198380 \| Broadcom, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	9.30%
C000198380 \| Microsoft Corp., , , 0
Holdings [Line Items]
Percent of Total Investments	9.20%
C000198380 \| NVIDIA Corp., , , 0
Holdings [Line Items]
Percent of Total Investments	6.10%
C000198380 \| Salesforce, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	5.30%
C000198380 \| Accenture plc, A, , 0
Holdings [Line Items]
Percent of Total Investments	5.20%
C000198380 \| Oracle Corp., , , 0
Holdings [Line Items]
Percent of Total Investments	3.70%
C000198380 \| Apple, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	2.50%
C000198380 \| Alphabet, Inc., A, , 0
Holdings [Line Items]
Percent of Total Investments	2.40%
C000198380 \| Cisco Systems, Inc., , , 0
Holdings [Line Items]
Percent of Total Investments	2.30%
C000198380 \| Broadline Retail
Holdings [Line Items]
Percent of Total Investments	9.50%
C000198380 \| Financial Services
Holdings [Line Items]
Percent of Total Investments	2.50%
C000198380 \| Interactive Media & Services
Holdings [Line Items]
Percent of Total Investments	6.30%
C000198380 \| Other Industries
Holdings [Line Items]
Percent of Total Investments	6.90%
C000198380 \| Software
Holdings [Line Items]
Percent of Total Investments	29.60%
C000198380 \| Semiconductors & Semiconductor Equipment
Holdings [Line Items]
Percent of Total Investments	20.20%
C000198380 \| IT Services
Holdings [Line Items]
Percent of Total Investments	9.90%
C000198380 \| Communications Equipment
Holdings [Line Items]
Percent of Total Investments	4.90%
C000198380 \| Capital Markets
Holdings [Line Items]
Percent of Total Investments	4.10%
C000198380 \| Technology Hardware, Storage & Peripherals
Holdings [Line Items]
Percent of Total Investments	3.80%
C000198380 \| Professional Services
Holdings [Line Items]
Percent of Total Investments	2.30%