iShares MSCI ACWI ex U.S. ETF (ACWX) N-CSR 3 Oct 24 Certified annual shareholder report (management investment company) Financial data

Form N-CSR Cover

Form N-CSR Cover	12 Months Ended
	Jul. 31, 2024
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	iShares Trust
Entity Central Index Key	0001100663
Document Period End Date	Jul. 31, 2024

Shareholder Report

Shareholder Report	12 Months Ended
	Jul. 31, 2024 USD ($) Holding
Shareholder Report [Line Items]
Document Type	N-CSR
Amendment Flag	false
Registrant Name	iShares Trust
Entity Central Index Key	0001100663
Document Period End Date	Jul. 31, 2024
C000012200 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI EAFE Growth ETF
Class Name	iShares MSCI EAFE Growth ETF
Trading Symbol	EFG
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI EAFE Growth 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI EAFE Growth ETF $ 0.36 %
Expenses Paid, Amount	$ 38
Expense Ratio, Percent	0.36%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence. Amid challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 22% of the Fund on average, contributed the most to the Fund’s return during the reporting period. Japan’s stock market accelerated to new highs, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). In Denmark, the healthcare sector contributed to the Fund’s performance, as pharmaceutical and biotechnology stocks gained amid positive clinical trials and enthusiasm over GLP-1 weight loss drugs. What detracted from performance? Stocks in France, which comprise about 13% of the Fund on average, detracted the most from the Fund’s return during the reporting period, most notably within the consumer discretionary sector as consumers continue to curb their spending on luxury goods. Additionally, Hong Kong stocks suffered from malaise related to economic weakness in China during the reporting period. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 8.66 % 6.60 % 5.55 % Fund Market 8.69 6.75 5.62 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI EAFE Growth Index 8.60 6.80 5.79
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 15,204,838,131
Holdings Count | Holding	375
Advisory Fees Paid, Amount	$ 41,894,443
Investment Company Portfolio Turnover	22%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Industrials 21.4 % Health Care 18.6 % Information Technology 16.0 % Consumer Discretionary 15.5 % Financials 10.6 % Consumer Staples 8.8 % Materials 5.3 % Communication Services 2.4 % Real Estate 0.6 % Utilities 0.6 % Energy 0.2 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 23.4 % United Kingdom 12.4 % France 12.2 % Switzerland 9.6 % Australia 7.8 % Germany 7.2 % Netherlands 6.9 % Denmark 6.8 % Sweden 4.0 % Italy 1.7 % Other # 8.0 % (a) Excludes money market funds. # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000153270 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Global Equity Factor ETF
Class Name	iShares Global Equity Factor ETF
Trading Symbol	GLOF
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Global Equity Factor 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Global Equity Factor ETF $ 0.20 %
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.20%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. With challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June, while the U.S. Federal Reserve Bank left interest rates unchanged. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. However, market sentiment swung late in the period amid a shift away from technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Stocks from the United States, which represent about 59% of the Fund on average, strongly contributed to the Fund’s performance during the reporting period. Among U.S. stocks, the information technology sector contributed the most, as the hype over artificial intelligence (“AI”) continued to benefit information technology companies. The U.S. semiconductor industry contributed significantly, as the technology is crucial to the ongoing buildout of AI, and expanded tariffs limited semiconductor imports from outside the U.S. In Japan, industrial stocks contributed to the Fund’s return, as several strategic agreements involving Japanese machinery companies were initiated during the reporting period. What detracted from performance? Stocks from Germany detracted from the Fund’s return during the reporting period. Weakness in the consumer discretionary sector stemmed from sluggish demand and production declines negatively affecting German carmakers. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: April 28, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 19.96 % 10.46 % 8.11 % Fund Market 20.12 10.52 8.09 S&P Global Broad Market Index 16.20 10.50 8.42 STOXX Global Equity Factor Index 20.07 10.60 8.29
Performance Inception Date	Apr. 28, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jul. 31, 2023
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 109,479,538
Holdings Count | Holding	607
Advisory Fees Paid, Amount	$ 238,754
Investment Company Portfolio Turnover	24%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 27.0 % Financials 15.5 % Consumer Discretionary 12.5 % Health Care 10.9 % Industrials 8.4 % Consumer Staples 7.0 % Communication Services 6.5 % Energy 3.8 % Materials 3.7 % Utilities 3.2 % Real Estate 1.5 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 60.3 % Japan 6.8 % United Kingdom 3.1 % South Korea 2.8 % China 2.5 % Canada 2.4 % France 2.2 % Australia 1.9 % Taiwan 1.9 % India 1.7 % Other # 14.4 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after July 31, 2024 at blackrock.com/fundreports The net expense ratio decreased from the prior fiscal year end primarily due to a change in the Fund’s investment advisory agreement during the prior fiscal year.
Material Fund Change Expenses [Text Block]	The net expense ratio decreased from the prior fiscal year end primarily due to a change in the Fund’s investment advisory agreement during the prior fiscal year.
Updated Prospectus Phone Number	1-800-iShares (1-800-474-2737)
Updated Prospectus Web Address	blackrock.com/fundreports
C000052896 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI EAFE Small-Cap ETF
Class Name	iShares MSCI EAFE Small-Cap ETF
Trading Symbol	SCZ
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI EAFE Small-Cap 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI EAFE Small-Cap ETF $ 0.40 %
Expenses Paid, Amount	$ 42
Expense Ratio, Percent	0.40%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. The European Central Bank cut its primary lending rate by 0.25% in June while the Bank of Japan exited its zero-interest rate policy that it had held since 2016, raising its short-term policy rate to 0.25%. Higher interest rates have worked against smaller-capitalization names, causing them to underperform their larger peers. What contributed to performance? Japanese small-capitalization stocks led the Fund’s return during the reporting period. Japanese stocks, which comprise approximately 34% of the Fund on average, have benefited from resilient economic growth, corporate structural reforms, and a return to monetary policy normalization. The industrials sector was helped by construction manufacturers on increased demand for factory construction and large-scale redevelopment projects. Regional banking stocks positively impacted the Fund’s return following the Bank of Japan’s gradual move away from negative interest rates, which helped boost net interest income. The United Kingdom comprises approximately 15% of the Fund on average, also contributed to the Fund’s return. Toward the end of the reporting period, news of the Labour Party’s election win helped smaller-capitalization stocks, which rose on hopes of improved economic growth. What detracted from performance? Germany’s industrials sector declined during the reporting period, detracting from the Fund’s returns. Added to higher energy costs, the sector also felt the effects of geopolitical strife, with shipment delays stemming from both the Russia/Ukraine war and the crisis in the Middle East. In addition to cooling economic data, French small caps lagged due to political uncertainty spurred by a snap Parliamentary election. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 8.98 % 5.36 % 5.05 % Fund Market 8.70 5.51 5.10 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI EAFE Small Cap Index 9.09 5.50 5.12
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 9,751,341,578
Holdings Count | Holding	2,130
Advisory Fees Paid, Amount	$ 38,690,777
Investment Company Portfolio Turnover	14%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Industrials 23.3 % Financials 12.8 % Consumer Discretionary 12.6 % Real Estate 10.7 % Information Technology 9.4 % Materials 9.2 % Consumer Staples 6.4 % Health Care 6.0 % Communication Services 3.7 % Energy 3.3 % Utilities 2.6 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 35.4 % United Kingdom 15.7 % Australia 8.9 % Sweden 5.8 % Switzerland 4.4 % Germany 3.9 % France 3.5 % Italy 3.3 % Israel 2.7 % Norway 2.5 % Other # 13.9 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000061364 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI ACWI ETF
Class Name	iShares MSCI ACWI ETF
Trading Symbol	ACWI
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI ACWI 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI ACWI ETF $ 0.32 %
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.32%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. U.S. equities led markets, propelled by the information technology sector and enthusiasm over artificial intelligence (“AI”). Amid challenging economic conditions, the European Central Bank cut its primary lending rate in June, while the U.S. Federal Reserve Bank left interest rates unchanged. The Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? The United States is the largest component of the Fund, comprising approximately 63% on average during the reporting period, and was also the most significant driver of the Fund’s return. Performance was largely driven by a handful of dominant information technology companies that have been able to rapidly innovate, capture significant market share, and generate substantial profits. Among these stocks, those that produce semiconductors were the most significant beneficiaries of excitement for AI and the U.S. government’s efforts to increase domestic chipmaking capacity. The financials sector was helped by solid earnings results from wealth management firms. What detracted from performance? Chinese stocks were modest detractors from the Fund’s performance during the reporting period. The country’s economic struggles continued, and equities have been negatively impacted by overall weak domestic demand. Electric vehicle manufacturers were notably weak as tariffs were increased by the United States and the European Union. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 17.06 % 11.08 % 8.89 % Fund Market 16.91 11.14 8.91 MSCI All Country World Index 17.02 11.05 8.74
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 18,219,793,036
Holdings Count | Holding	2,364
Advisory Fees Paid, Amount	$ 58,548,495
Investment Company Portfolio Turnover	4%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 25.0 % Financials 16.1 % Health Care 11.0 % Industrials 10.6 % Consumer Discretionary 10.3 % Communication Services 7.6 % Consumer Staples 6.3 % Energy 4.4 % Materials 4.0 % Utilities 2.6 % Real Estate 2.1 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 64.3 % Japan 5.3 % United Kingdom 3.4 % Canada 2.7 % France 2.5 % China 2.5 % Switzerland 2.2 % India 2.0 % Germany 2.0 % Taiwan 1.9 % Other # 11.2 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000099140 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI EAFE Min Vol Factor ETF
Class Name	iShares MSCI EAFE Min Vol Factor ETF
Trading Symbol	EFAV
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI EAFE Min Vol Factor 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI EAFE Min Vol Factor ETF $ 0.20 %
Expenses Paid, Amount	$ 21
Expense Ratio, Percent	0.20%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence. With challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 27% of the Fund on average, contributed the most to the Fund’s return during the reporting period. Japan’s stock market accelerated to new highs during the reporting period, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). In the United Kingdom, the industrials sector was helped by increased government actions aimed at boosting manufacturing in the country. What detracted from performance? Stocks in New Zealand modestly detracted from the Fund’s return during the reporting period as the country suffered from economic weakness, negatively impacting stocks in the industrial sector. In Ireland, consumer staples stocks declined amid squeezing profit margins. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 10.09 % 3.24 % 4.21 % Fund Market 9.68 3.29 4.21 MSCI All Country World Index 17.02 11.05 8.74 MSCI EAFE Minimum Volatility (USD) Index 9.89 3.18 4.21
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 6,631,809,752
Holdings Count | Holding	244
Advisory Fees Paid, Amount	$ 14,192,984
Investment Company Portfolio Turnover	23%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 19.2 % Health Care 16.7 % Industrials 15.5 % Consumer Staples 13.2 % Communication Services 9.2 % Utilities 7.0 % Consumer Discretionary 6.7 % Information Technology 4.9 % Energy 4.5 % Materials 2.0 % Real Estate 1.1 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 28.3 % Switzerland 13.7 % United Kingdom 9.7 % France 7.2 % Hong Kong 5.6 % Germany 5.4 % Netherlands 4.1 % Singapore 4.1 % Spain 3.9 % Australia 3.4 % Other # 14.6 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000119716 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Core MSCI Total International Stock ETF
Class Name	iShares Core MSCI Total International Stock ETF
Trading Symbol	IXUS
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Core MSCI Total International Stock 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Core MSCI Total International Stock ETF $ 0.07 %
Expenses Paid, Amount	$ 7
Expense Ratio, Percent	0.07%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence (“AI”). Amid challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 16% of the Fund on average, meaningfully contributed to the Fund’s return during the reporting period. Financials stocks benefited from resilient economic growth, corporate structural reforms, and a return to monetary policy normalization. Additionally, the industrials sector was supported by a weaker yen, higher exports, and increased demand for factory construction and large-scale redevelopment projects. In Taiwan, equities, particularly semiconductor manufacturers, benefited from excitement over increased AI demand. These companies provide the backbone for the complex calculations required for AI algorithms. What detracted from performance? Detractors from the Fund’s return during the reporting period were driven by Chinese stocks as the country continued to face economic weakness. Chinese automobile manufacturers faced challenges from increasing import tariffs from the United States and the European Union. Amid slowing retail sales, broadline retailers, those that offer a wide range of consumer discretionary merchandise to end consumers, also hindered performance. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 9.84 % 6.49 % 4.43 % Fund Market 9.68 6.64 4.46 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI ACWI ex USA IMI 9.78 6.39 4.29
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 37,872,500,211
Holdings Count | Holding	4,430
Advisory Fees Paid, Amount	$ 23,755,273
Investment Company Portfolio Turnover	3%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 20.6 % Industrials 14.9 % Information Technology 13.2 % Consumer Discretionary 11.0 % Health Care 9.3 % Materials 7.6 % Consumer Staples 7.2 % Energy 5.2 % Communication Services 5.0 % Utilities 3.2 % Real Estate 2.8 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 15.9 % United Kingdom 9.7 % Canada 7.5 % France 6.4 % China 6.3 % India 6.2 % Switzerland 5.8 % Taiwan 5.5 % Germany 5.0 % Australia 4.9 % Other # 26.8 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000140338 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Core MSCI Pacific ETF
Class Name	iShares Core MSCI Pacific ETF
Trading Symbol	IPAC
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Core MSCI Pacific 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Core MSCI Pacific ETF $ 0.09 %
Expenses Paid, Amount	$ 10
Expense Ratio, Percent	0.09%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Asian equities rose during the reporting period but underperformed the broader markets amid weakening growth in China and a stronger U.S. dollar. Japanese equities meaningfully outperformed their Asian peers, supported by central bank actions and improved corporate governance. The Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Conversely, in China, weak economic growth led to substantial government stimulus packages intended to boost retail spending and consumer confidence. What contributed to performance? Japanese equities, which comprise about 68% of the Fund on average, overwhelmingly contributed to the Fund’s return during the reporting period. The country’s stock market accelerated to new highs, benefiting from resilient economic growth, corporate structural reforms, and a return to monetary policy normalization. Banking stocks positively impacted the Fund’s return as rising interest rates contributed to higher yields on loans and bonds held by banks. The industrials sector was supported by a weaker yen, higher exports, and increased demand for factory construction and large-scale redevelopment projects. The Japanese government’s policies aimed at promoting digital transformation and innovation in technology sectors also boosted the performance of information technology stocks. What detracted from performance? Stocks in Hong Kong detracted from the Fund’s return during the reporting period. Given Hong Kong’s status as a special administrative region of China, stocks were more susceptible to China’s economic slowdown and regulatory scrutiny. The financials stocks declined amid tightened regulations and deteriorating U.S.-China relations, while slumping property values hindered the real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 11.01 % 5.90 % 5.01 % Fund Market 10.59 5.95 5.01 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI Pacific IMI 11.30 5.83 4.93
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 2,032,570,359
Holdings Count | Holding	1,459
Advisory Fees Paid, Amount	$ 1,657,847
Investment Company Portfolio Turnover	5%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 20.6 % Industrials 19.0 % Consumer Discretionary 14.0 % Information Technology 10.5 % Materials 8.1 % Health Care 7.5 % Real Estate 5.8 % Communication Services 5.5 % Consumer Staples 5.3 % Utilities 2.0 % Energy 1.7 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 69.2 % Australia 21.2 % Hong Kong 4.7 % Singapore 4.2 % New Zealand 0.7 % ​ (a) Excludes money market funds.
C000149148 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI Intl Quality Factor ETF
Class Name	iShares MSCI Intl Quality Factor ETF
Trading Symbol	IQLT
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI Intl Quality Factor 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI Intl Quality Factor ETF $ 0.30 %
Expenses Paid, Amount	$ 32
Expense Ratio, Percent	0.30%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence. With challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 12% of the Fund on average, strongly contributed to the Fund’s return. Japan’s stock market accelerated to new highs, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. In Denmark, the healthcare sector contributed to the Fund’s performance, as pharmaceutical and biotechnology stocks gained amid positive clinical trials and enthusiasm over GLP-1 weight loss drugs. What detracted from performance? Stocks in France detracted the most from the Fund’s return during the reporting period, most notably within the consumer discretionary sector as consumers continue to curb their spending on luxury goods. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: January 13, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 11.48 % 8.40 % 7.30 % Fund Market 11.11 8.49 7.28 MSCI ACWI ex USA Index 9.75 6.29 5.47 MSCI World ex USA Sector Neutral Quality Index 11.26 8.45 7.44
Performance Inception Date	Jan. 13, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 8,083,998,916
Holdings Count | Holding	306
Advisory Fees Paid, Amount	$ 22,212,680
Investment Company Portfolio Turnover	27%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 21.8 % Industrials 16.9 % Health Care 12.2 % Consumer Discretionary 10.3 % Information Technology 8.8 % Consumer Staples 8.2 % Materials 7.2 % Energy 5.6 % Communication Services 3.8 % Utilities 3.3 % Real Estate 1.9 % Country/Geographic allocation Country/Geographic Region Percent of (a) United Kingdom 17.2 % Switzerland 15.2 % Japan 13.0 % France 8.5 % Netherlands 7.4 % Canada 7.0 % Australia 5.8 % Germany 5.4 % Denmark 4.7 % Sweden 4.6 % Other # 11.2 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000012081 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI EAFE ETF
Class Name	iShares MSCI EAFE ETF
Trading Symbol	EFA
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI EAFE 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI EAFE ETF $ 0.32 %
Expenses Paid, Amount	$ 34
Expense Ratio, Percent	0.32%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. The European Central Bank cut its primary lending rate by 0.25% in June while the Bank of Japan exited its zero-interest rate policy that it had held since 2016, raising its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 23% of the Fund on average, contributed the most to the Fund’s return during the reporting period. Japan’s stock market accelerated to new highs during the reporting period, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). In the United Kingdom, which comprises about 15% of the Fund on average, the financials sector was helped by solid lending income attributed to higher interest rates. What detracted from performance? Hong Kong stocks suffered from malaise related to economic weakness in China during the reporting period. As a special administrative region of China, many stocks are dual listed in Hong Kong and China and are more susceptible to China’s recent economic slowdown and regulatory scrutiny. Hong Kong’s financials sector was particularly impacted by slowing Chinese growth, while slumping property values hindered the real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 11.27 % 7.37 % 4.82 % Fund Market 11.22 7.52 4.87 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI EAFE Index 11.21 7.36 4.84
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 55,764,354,994
Holdings Count | Holding	749
Advisory Fees Paid, Amount	$ 161,558,287
Investment Company Portfolio Turnover	3%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 20.4 % Industrials 17.1 % Health Care 13.7 % Consumer Discretionary 11.1 % Information Technology 9.1 % Consumer Staples 8.6 % Materials 6.6 % Communication Services 4.1 % Energy 4.0 % Utilities 3.2 % Real Estate 2.1 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 23.3 % United Kingdom 15.1 % France 11.2 % Switzerland 9.9 % Germany 8.6 % Australia 7.4 % Netherlands 5.0 % Denmark 3.7 % Sweden 3.2 % Italy 2.7 % Other # 9.9 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000012201 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI EAFE Value ETF
Class Name	iShares MSCI EAFE Value ETF
Trading Symbol	EFV
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI EAFE Value 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI EAFE Value ETF $ 0.33 %
Expenses Paid, Amount	$ 35
Expense Ratio, Percent	0.33%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence. Amid challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 23% of the Fund on average, contributed the most to the Fund’s return during the reporting period. Japan’s stock market accelerated to new highs following ongoing corporate reforms and as the Bank of Japan ended its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). In the United Kingdom, which comprises about 18% of the Fund on average, the financials sector was helped by solid lending income attributed to higher interest rates. What detracted from performance? Hong Kong stocks suffered from malaise related to economic weakness in China during the reporting period. Hong Kong’s financials sector was particularly impacted by slowing Chinese growth, while slumping property values hindered the real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 13.89 % 7.48 % 3.55 % Fund Market 13.35 7.60 3.57 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI EAFE Value Index 13.90 7.53 3.66
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 14,980,930,767
Holdings Count | Holding	473
Advisory Fees Paid, Amount	$ 54,702,522
Investment Company Portfolio Turnover	28%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 30.2 % Industrials 12.8 % Health Care 8.8 % Consumer Staples 8.3 % Energy 7.9 % Materials 7.9 % Consumer Discretionary 6.7 % Utilities 5.9 % Communication Services 5.8 % Real Estate 3.5 % Information Technology 2.2 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 23.1 % United Kingdom 17.8 % Switzerland 10.2 % France 10.1 % Germany 10.0 % Australia 7.1 % Spain 3.7 % Italy 3.7 % Netherlands 3.2 % Sweden 2.3 % Other # 8.8 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000012094 [Member]
Shareholder Report [Line Items]
Fund Name	iShares China Large-Cap ETF
Class Name	iShares China Large-Cap ETF
Trading Symbol	FXI
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares China Large-Cap 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares China Large-Cap ETF $ 0.74 %
Expenses Paid, Amount	$ 69
Expense Ratio, Percent	0.74%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Emerging market equities rose during the reporting period but underperformed the broader markets as geopolitical uncertainty and a stronger U.S. dollar weighed on performance. China’s economic struggles continued, with the housing sector facing particular challenges due to a major property company defaulting and falling home prices. Overall weak domestic demand has led to substantial stimulus packages by the Chinese government in an attempt to boost retail spending and consumer confidence. The major policy interventions enacted by the Chinese government helped to ease investor concerns, but equities still underperformed the broader markets during the period. What contributed to performance? The financials sector modestly contributed to the Fund’s return during the reporting period, as stimulus measures by the Chinese government sought to increase consumer confidence. News that a Chinese sovereign wealth fund increased its holdings in the country’s four major lenders also benefited those stocks. What detracted from performance? Large-cap Chinese equities experienced negative performance for the reporting period, pulled down by weak domestic economic growth and increasing regulatory actions from the Chinese government. Automobile stocks were among the largest detractors from the Fund’s return, particularly electric vehicle (“E.V.”) manufacturers. Stocks of E.V. makers fell sharply as the United States, the European Union, and Latin America increased tariffs on Chinese imports, and fears grew that more countries would do the same. The threat of sanctions also negatively impacted the information technology sector, as did intensifying price wars within China’s artificial intelligence services. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV (12.73 ) % (7.01 ) % (2.22 ) % Fund Market (13.07 ) (6.83 ) (2.11 ) FTSE Emerging All Cap Index 8.14 4.63 3.61 FTSE China 50 Index (10.92 ) (6.18 ) (1.43 )
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 4,249,391,729
Holdings Count | Holding	53
Advisory Fees Paid, Amount	$ 34,540,718
Investment Company Portfolio Turnover	18%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Consumer Discretionary 32.7 % Financials 30.4 % Communication Services 18.1 % Energy 6.8 % Information Technology 3.9 % Materials 1.9 % Real Estate 1.8 % Industrials 1.8 % Health Care 1.2 % Consumer Staples 0.8 % Utilities 0.6 % Ten largest holdings Security Percent of (a) Alibaba Group Holding Ltd. 9.9 % Tencent Holdings Ltd. 8.9 % Meituan, Class B 8.2 % China Construction Bank Corp., Class H 7.3 % Industrial & Commercial Bank of China Ltd., Class H 4.9 % Bank of China Ltd., Class H 4.4 % NetEase Inc. 4.1 % Xiaomi Corp., Class B 3.9 % JD.com Inc. 3.8 % BYD Co. Ltd., Class H 3.7 % ​ (a) Excludes money market funds.
Largest Holdings [Text Block]	Ten largest holdings Security Percent of (a) Alibaba Group Holding Ltd. 9.9 % Tencent Holdings Ltd. 8.9 % Meituan, Class B 8.2 % China Construction Bank Corp., Class H 7.3 % Industrial & Commercial Bank of China Ltd., Class H 4.9 % Bank of China Ltd., Class H 4.4 % NetEase Inc. 4.1 % Xiaomi Corp., Class B 3.9 % JD.com Inc. 3.8 % BYD Co. Ltd., Class H 3.7 % ​ (a) Excludes money market funds.
C000050168 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI Europe Small-Cap ETF
Class Name	iShares MSCI Europe Small-Cap ETF
Trading Symbol	IEUS
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI Europe Small-Cap 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI Europe Small-Cap ETF $ 0.41 %
Expenses Paid, Amount	$ 43
Expense Ratio, Percent	0.41%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. However, stocks underperformed their larger-capitalization peers due to increasing risk aversion, their vulnerability to higher interest rates, and the war in Ukraine. As inflation began to move closer to central bank targets, several countries began lowering borrowing costs, beginning with Switzerland and Sweden. In a major turning point in monetary policy, the European Central Bank cut its primary lending rate by 0.25% in June. This was seen as a positive catalyst for small-capitalization stocks as higher borrowing costs have impacted consumers and businesses. What contributed to performance? Stocks in the United Kingdom, which comprise approximately 30% of the Fund on average, contributed to the Fund’s return during the reporting period. In the financials sector, banks benefited from solid lending income attributed to higher interest rates, while performance fee income helped asset managers. Sweden’s economic outlook improved after the Riksbank became one of the first central banks to start cutting interest rates, helping sectors that benefit from policy easing. What detracted from performance? In Germany, stock performance was hindered by economic challenges, including weak growth and slipping business expectations during the reporting period. In particular, the materials sector was strained by shipment delays from the Russia/Ukraine war and the crisis in the Middle East. Healthcare stocks in Germany declined as several companies reported gloomy outlooks. In addition to cooling economic data, stocks in France declined amid political uncertainty spurred by a snap Parliamentary election. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 11.18 % 6.47 % 5.47 % Fund Market 10.98 6.63 5.52 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI Europe Small Cap Index 10.88 6.48 5.43
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 100,224,664
Holdings Count | Holding	891
Advisory Fees Paid, Amount	$ 446,610
Investment Company Portfolio Turnover	16%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Industrials 24.6 % Financials 16.1 % Consumer Discretionary 10.4 % Real Estate 9.2 % Information Technology 8.2 % Health Care 7.3 % Materials 7.1 % Consumer Staples 5.3 % Communication Services 4.7 % Energy 4.4 % Utilities 2.7 % Country/Geographic allocation Country/Geographic Region Percent of (a) United Kingdom 32.4 % Sweden 11.9 % Switzerland 9.0 % Germany 7.9 % France 7.2 % Italy 6.8 % Norway 5.1 % Denmark 4.9 % Spain 3.6 % Netherlands 2.8 % Other # 8.4 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000156613 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI Intl Size Factor ETF
Class Name	iShares MSCI Intl Size Factor ETF
Trading Symbol	ISZE
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI Intl Size Factor 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI Intl Size Factor ETF $ 0.30 %
Expenses Paid, Amount	$ 31
Expense Ratio, Percent	0.30%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. Performance was led by information technology companies amid enthusiasm over artificial intelligence, resulting in large-capitalization stocks outperforming their smaller peers. Given challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprised about 27% of the Fund on average, contributed the most to the Fund’s return. Japan’s stock market accelerated to new highs during the reporting period, and financial firms were helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. In Canada, which represented approximately 10% of the Fund on average, materials stocks contributed to performance, largely due to increased gold exports. The country is one of the world’s leading gold producers and exporters and benefited as gold prices reached all-time highs. What detracted from performance? Stocks in Hong Kong detracted from the Fund’s performance during the reporting period. Given Hong Kong’s status as a special administrative region of China, financials stocks were negatively impacted by increased regulatory oversight in an attempt to prevent risks that could spread to all segments of the markets. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 16, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 7.04 % 5.06 % 4.58 % Fund Market 7.11 5.24 4.58 MSCI ACWI ex USA Index 9.75 6.29 4.99 MSCI World ex USA Low Size Index 7.18 5.24 4.69
Performance Inception Date	Jun. 16, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jun. 05, 2024
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 5,376,244
Holdings Count | Holding	819
Advisory Fees Paid, Amount	$ 24,583
Investment Company Portfolio Turnover	17%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Industrials 19.9 % Financials 17.7 % Consumer Discretionary 10.5 % Materials 8.3 % Information Technology 7.9 % Consumer Staples 7.8 % Health Care 7.6 % Communication Services 5.8 % Real Estate 5.7 % Utilities 5.3 % Energy 3.5 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 26.3 % Canada 10.8 % United Kingdom 9.7 % Australia 7.3 % France 6.8 % Germany 6.3 % Switzerland 5.1 % Sweden 4.8 % Netherlands 3.1 % Hong Kong 3.0 % Other # 16.8 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. On June 5, 2024, the Board of Trustees of the Fund approved the liquidation of the Fund. After the close of business on August 12, 2024, the Fund no longer accepted creation orders. Trading in the Fund halted prior to market open on August 13, 2024. Proceeds of the liquidation were sent to shareholders on August 15, 2024.
C000157306 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Currency Hedged MSCI EAFE Small-Cap ETF
Class Name	iShares Currency Hedged MSCI EAFE Small-Cap ETF
Trading Symbol	HSCZ
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Currency Hedged MSCI EAFE Small-Cap 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Currency Hedged MSCI EAFE Small-Cap ETF $ (a) 0.03 % (a) ​ (a) Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.
Expenses Paid, Amount	$ 3	[1]
Expense Ratio, Percent	0.03%	[1]
Factors Affecting Performance [Text Block]	How did the Fund perform last year? While global equities rose for the reporting period, small-capitalization stocks underperformed their larger-capitalization peers due to increasing risk aversion and their vulnerability to high inflation, rising interest rates, a slowing economy, and the war in Ukraine. In Europe, concerns grew over slowing economic growth and the European Central Bank cut its primary lending rate, a major turning point in monetary policy, as higher borrowing costs have negatively impacted both consumers and businesses. Conversely, the Bank of Japan exited its zero-interest rate policy that it had held since 2016. What contributed to performance? Japanese small-capitalization stocks led the Fund’s return during the reporting period. Japanese stocks comprise approximately 34% of the Fund on average, and benefited from resilient economic growth, corporate structural reforms, and a return to monetary policy normalization. The industrials sector was helped by construction manufacturers on increased demand for factory construction and large-scale redevelopment projects. Regional banking stocks positively impacted the Fund’s return following the Bank of Japan’s gradual move away from negative interest rates. The United Kingdom comprises approximately 15% of the Fund on average, also contributed. Toward the end of the reporting period, news of the Labour Party’s election win helped smaller-capitalization stocks, which rose on hopes of improved economic growth. What detracted from performance? Germany’s industrials sector declined during the reporting period. Added to higher energy costs, the sector also felt the effects of geopolitical strife, with shipment delays stemming from both the Russia/Ukraine war and the crisis in the Middle East. In addition to cooling economic data, French small caps lagged due to political uncertainty spurred by a snap Parliamentary election. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 29, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 15.34 % 9.95 % 8.93 % Fund Market 15.35 9.92 8.93 MSCI ACWI ex USA Index 9.75 6.29 5.10 MSCI EAFE Small Cap 100% Hedged to USD Index 16.41 10.25 9.13
Performance Inception Date	Jun. 29, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 150,905,323
Holdings Count | Holding	115
Advisory Fees Paid, Amount	$ 33,777
Investment Company Portfolio Turnover	12%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Portfolio composition Investment Type Percent of Net Assets Investment Companies 100.2 % Short-term Investments — % (a) Forward foreign currency exchange contracts, net cumulative depreciation (2.4 ) % Other assets less liabilities 2.2 % Sector allocation (of the underlying fund) (b) Sector Percent of (c) Industrials 23.3 % Financials 12.8 % Consumer Discretionary 12.6 % Real Estate 10.7 % Information Technology 9.4 % Materials 9.2 % Consumer Staples 6.4 % Health Care 6.0 % Communication Services 3.7 % Energy 3.3 % Utilities 2.6 % ​ (a) Rounds to less than 0.1%. ​ (b) The underlying fund is iShares MSCI EAFE Small-Cap ETF. ​ (c) Excludes money market funds.
C000205801 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Self-Driving EV and Tech ETF
Class Name	iShares Self-Driving EV and Tech ETF
Trading Symbol	IDRV
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Self-Driving EV and Tech 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Self-Driving EV and Tech ETF $ 0.47 %
Expenses Paid, Amount	$ 39
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. U.S. stocks powered markets higher, driven by the enthusiasm for artificial intelligence (“AI”), which was particularly evident in the information technology sector. Sales of electric vehicles (“EV”) increased in 2023; however, these manufacturers suffered from intensified competition and escalating price wars. Market sentiment swung late in the one-year period amid a shift away from information technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Switzerland modestly contributed to the Fund’s return during the reporting period as a global technology company that manufactures factory robots and electric motors for ships advanced. The firm reported better-than-expected first-quarter profit and signaled faster growth in the coming months. A French automaker with a long history and a dedicated EV platform gained after the company canceled plans to spin off its dedicated electric vehicle and software business. What detracted from performance? Amid slowing profitability and increased competition, companies that make EVs and firms that supply components to these manufacturers slumped. U.S. stocks, which represented approximately 31% of the Fund on average during the reporting period, were the largest detractor from performance. Reports of self-driving safety issues from the world’s largest EV manufacturer also hindered the performance of the industry. While China is the world’s largest market for EVs, these automobile manufacturers declined as the United States, the European Union, and Latin America increased tariffs on Chinese imports and fears grew that more countries would do the same. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: April 16, 2019 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV (34.17 ) % 5.81 % 4.59 % Fund Market (34.24 ) 5.76 4.53 MSCI All Country World Index 17.02 11.05 10.64 NYSE ® ® (35.22 ) 5.58 4.36
Performance Inception Date	Apr. 16, 2019
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 197,174,584
Holdings Count | Holding	53
Advisory Fees Paid, Amount	$ 1,440,717
Investment Company Portfolio Turnover	38%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Consumer Discretionary 63.4 % Industrials 21.2 % Materials 7.8 % Information Technology 7.6 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 33.7 % China 20.5 % South Korea 10.0 % Germany 8.2 % France 8.0 % Japan 6.8 % Switzerland 4.1 % Australia 3.3 % Sweden 2.7 % Taiwan 1.2 % Other # 1.5 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000065072 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI All Country Asia ex Japan ETF
Class Name	iShares MSCI All Country Asia ex Japan ETF
Trading Symbol	AAXJ
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI All Country Asia ex Japan 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI All Country Asia ex Japan ETF $ 0.71 %
Expenses Paid, Amount	$ 73
Expense Ratio, Percent	0.71%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Asian equities rose during the reporting period but underperformed the broader markets amid weakening growth in China and a stronger U.S. dollar. In China, weak economic growth led to substantial government stimulus packages intended to boost retail spending and consumer confidence. The reelection of Indian Prime Minister Narendra Modi and the formation of a coalition government helped dispel market concerns over the direction of equity reforms in the country. What contributed to performance? Optimism over economic growth, increased liquidity, and solid corporate earnings helped Indian equities contribute to the Fund’s return during the reporting period. Automotive stocks gained on solid sales data and positive market sentiment. Given that automakers are interest-rate sensitive and higher rates increase car loan costs, these stocks gained on hopes the Reserve Bank of India had finished raising rates. India’s industrials sector rose amid a spending push on infrastructure. Information technology stocks in Taiwan, particularly semiconductor manufacturers, benefited from excitement over increased demand for artificial intelligence (“AI”). These companies provide the backbone for the complex calculations required for AI algorithms. What detracted from performance? Stocks in China modestly detracted from the Fund’s performance during the reporting period, with the country comprising about 31% of the Fund on average. China’s economic struggles continued as trade wars and tariffs from the United States and the European Union weighed on the performance of several industries, including automobiles and broadline retail companies. Given Hong Kong’s status as a special administrative region of China, stocks were more susceptible to China’s economic slowdown and regulatory scrutiny. In particular, slumping property values hindered Hong Kong’s real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 4.60 % 2.92 % 2.97 % Fund Market 4.63 3.11 3.05 MSCI Emerging Markets Index 6.27 3.41 2.63 MSCI AC Asia ex Japan Index 6.24 3.85 3.77
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 2,358,375,781
Holdings Count | Holding	995
Advisory Fees Paid, Amount	$ 17,172,158
Investment Company Portfolio Turnover	11%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 28.1 % Financials 20.4 % Consumer Discretionary 13.1 % Communication Services 9.3 % Industrials 7.7 % Materials 4.6 % Consumer Staples 4.2 % Energy 3.9 % Health Care 3.5 % Utilities 3.0 % Real Estate 2.2 % Country/Geographic allocation Country/Geographic Region Percent of (a) China 27.9 % India 22.9 % Taiwan 21.5 % South Korea 14.0 % Hong Kong 4.5 % Singapore 3.5 % Indonesia 1.9 % Malaysia 1.6 % Thailand 1.6 % Philippines 0.6 % ​ (a) Excludes money market funds.
C000119715 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Core MSCI EAFE ETF
Class Name	iShares Core MSCI EAFE ETF
Trading Symbol	IEFA
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Core MSCI EAFE 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Core MSCI EAFE ETF $ 0.07 %
Expenses Paid, Amount	$ 7
Expense Ratio, Percent	0.07%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. The European Central Bank cut its primary lending rate by 0.25% in June while the Bank of Japan exited its zero-interest rate policy that it had held since 2016, raising its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 24% of the Fund on average, contributed the most to the Fund’s return during the reporting period. Japan’s stock market accelerated to new highs following ongoing corporate reforms and as the Bank of Japan ended its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). In the United Kingdom, which comprises about 15% of the Fund on average, the financials sector was helped by solid lending income attributed to higher interest rates. What detracted from performance? Hong Kong stocks suffered from malaise related to economic weakness in China during the reporting period. As a special administrative region of China, many stocks are dual listed in Hong Kong and China, making them susceptible to China’s recent economic slowdown and increased regulatory scrutiny. Hong Kong’s financials sector was particularly impacted by slowing Chinese growth, while slumping property values hindered the real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 11.24 % 7.30 % 5.07 % Fund Market 10.99 7.44 5.10 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI EAFE IMI Index 10.92 7.08 4.87
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 120,159,549,449
Holdings Count | Holding	2,745
Advisory Fees Paid, Amount	$ 74,958,004
Investment Company Portfolio Turnover	2%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 19.3 % Industrials 17.9 % Health Care 12.6 % Consumer Discretionary 11.3 % Information Technology 9.2 % Consumer Staples 8.3 % Materials 6.9 % Communication Services 4.1 % Energy 3.9 % Real Estate 3.3 % Utilities 3.2 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 25.0 % United Kingdom 15.2 % France 10.1 % Switzerland 9.1 % Germany 7.9 % Australia 7.7 % Netherlands 4.5 % Denmark 3.6 % Sweden 3.5 % Italy 2.8 % Other # 10.6 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000140337 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Core MSCI Europe ETF
Class Name	iShares Core MSCI Europe ETF
Trading Symbol	IEUR
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Core MSCI Europe 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Core MSCI Europe ETF $ 0.09 %
Expenses Paid, Amount	$ 10
Expense Ratio, Percent	0.09%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. As inflation moved closer to central bank targets, several countries began lowering borrowing costs, beginning with Switzerland and Sweden. In a major turning point in monetary policy, the European Central Bank cut its primary lending rate by 0.25% in June. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Stocks in the United Kingdom (“U.K.”), which comprise approximately 23% of the Fund on average, contributed meaningfully to the Fund’s return during the reporting period. In the financials sector, U.K. banks benefited from solid lending income attributed to higher interest rates, while performance fee income helped asset managers. Stocks in the U.K. industrials sector were helped by increased government actions aimed at boosting manufacturing in the country. In Denmark, the healthcare sector contributed to the Fund’s performance, as pharmaceutical and biotechnology stocks gained amid positive clinical trials and enthusiasm over GLP-1 weight loss drugs. What detracted from performance? On a country level, there were no detractors from the Fund’s performance for the reporting period. However, consumer discretionary and consumer staples stocks hindered performance. Amid economic uncertainty and rising raw material costs, luxury stocks across Europe were notable detractors, as a shift in consumer preferences and eroding confidence caused weakness among higher-end retailers. These same factors also affected beverage stocks within the consumer staples sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 11.40 % 8.09 % 5.11 % Fund Market 11.40 8.26 5.10 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI Europe IMI 10.70 7.83 4.86
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jul. 31, 2023
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 4,630,353,384
Holdings Count | Holding	1,011
Advisory Fees Paid, Amount	$ 3,911,942
Investment Company Portfolio Turnover	5%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 18.6 % Industrials 17.5 % Health Care 15.6 % Consumer Staples 10.1 % Consumer Discretionary 9.9 % Information Technology 7.9 % Materials 6.4 % Energy 5.2 % Utilities 3.8 % Communication Services 3.3 % Real Estate 1.7 % Country/Geographic allocation Country/Geographic Region Percent of (a) United Kingdom 24.1 % France 16.0 % Switzerland 14.5 % Germany 12.6 % Netherlands 7.2 % Sweden 5.6 % Denmark 5.6 % Italy 4.4 % Spain 4.0 % Belgium 1.7 % Other # 4.3 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after July 31, 2024 at blackrock.com/fundreports The net expense ratio decreased from the prior fiscal year end primarily due to a decrease in professional fees for foreign withholding tax claims.
Material Fund Change Expenses [Text Block]	The net expense ratio decreased from the prior fiscal year end primarily due to a decrease in professional fees for foreign withholding tax claims.
Updated Prospectus Phone Number	1-800-iShares (1-800-474-2737)
Updated Prospectus Web Address	blackrock.com/fundreports
C000212225 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Genomics Immunology and Healthcare ETF
Class Name	iShares Genomics Immunology and Healthcare ETF
Trading Symbol	IDNA
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Genomics Immunology and Healthcare 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Genomics Immunology and Healthcare ETF $ 0.48 %
Expenses Paid, Amount	$ 49
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. The U.S. Federal Reserve Bank left rates on hold during the reporting period as the central bank sought greater confidence in slowing inflationary pressures. As inflation measures became more subdued, expectations increased for interest rate cuts in 2024. However, market sentiment swung late in the one-year period amid a shift away from information technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? U.S. stocks, which represented approximately 68% of the Fund on average during the reporting period, contributed the most to the Fund’s return. Biotechnology firms led healthcare stocks, powered by approvals from the U.S. Food and Drug Administration, positive clinical trials, and promising pipelines that helped to boost revenue. Pharmaceutical companies advanced amid ongoing strong sales of their blockbuster drugs. A Danish pharmaceutical firm gained following positive clinical data from for its experimental daily pill for obesity and type 2 diabetes. What detracted from performance? A specialty chemical company within the materials sector in the United States was a large detractor from the Fund’s performance during the reporting period. The firm faced decreasing revenue following the expected ramp down of COVID-19 testing for U.S. students. In Germany, stocks of biotechnology companies declined amid a shift away from COVID-19 treatments and court proceedings over intellectual property rights. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 11, 2019 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 4.98 % (1.34 ) % 1.05 % Fund Market 4.70 (1.39 ) 1.01 MSCI All Country World Index 17.02 11.05 11.22 NYSE ® ® 5.01 (1.17 ) 1.18
Performance Inception Date	Jun. 11, 2019
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 140,404,921
Holdings Count | Holding	52
Advisory Fees Paid, Amount	$ 616,871
Investment Company Portfolio Turnover	51%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Industry allocation Industry Percent of (a) Biotechnology 74.6 % Pharmaceuticals 23.6 % Life Sciences Tools & Services 1.2 % Chemicals 0.6 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 67.5 % Japan 5.5 % Switzerland 4.7 % France 4.5 % China 4.1 % Denmark 4.0 % United Kingdom 3.7 % Germany 3.4 % South Korea 1.1 % Netherlands 0.8 % Canada 0.7 % ​ (a) Excludes money market funds.
C000240517 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Breakthrough Environmental Solutions ETF
Class Name	iShares Breakthrough Environmental Solutions ETF
Trading Symbol	ETEC
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Breakthrough Environmental Solutions 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Breakthrough Environmental Solutions ETF $ 0.47 %
Expenses Paid, Amount	$ 42
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. Sustainable and renewable energy stocks declined during the period as they faced growing competition from fossil fuel companies and reduced subsidies. Market sentiment swung late in the one-year period amid a shift away from information technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Germany is a long-time leader in renewable energy and environmental technologies and has ambitious renewable targets. During the reporting period, an energy company that received a multi-billion-dollar deal in project-related guarantees backed by the German government contributed to the Fund’s return. The firm is a maker of gas and wind turbines as well as large converter stations, vital equipment for the country’s efforts to gradually phase out fossil fuels. Also contributing to the Fund’s return was Europe’s top operator of energy networks, as the firm raised its five-year investment target. What detracted from performance? China comprised 19% of the Fund on average during the reporting period and was also the largest detractor from the Fund’s return. Electric vehicle manufacturers fell sharply as the United States, the European Union, and Latin America increased tariffs on Chinese imports, and fears grew that more countries would do the same. The sanctions also negatively impacted semiconductor manufacturer companies in the information technology sector. A Korean electronics components company fell due to declining demand for consumer electronics, supply chain disruptions, and economic uncertainties impacting global markets. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: March 28, 2023 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year Since Fund Fund NAV (19.71 ) % (9.72 ) % Fund Market (19.69 ) (9.82 ) MSCI All Country World Index 17.02 23.64 Morningstar ® ℠ (19.56 ) (9.23 )
Performance Inception Date	Mar. 28, 2023
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 3,347,414
Holdings Count | Holding	46
Advisory Fees Paid, Amount	$ 16,437
Investment Company Portfolio Turnover	68%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Industry allocation Industry Percent of (a) Semiconductors & Semiconductor Equipment 23.6 % Machinery 18.8 % Electrical Equipment 17.7 % Automobiles 17.6 % Chemicals 8.4 % Automobile Components 6.3 % Electronic Equipment, Instruments & Components 5.3 % Leisure Products 1.8 % Commercial Services & Supplies 0.5 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 29.9 % China 19.4 % Japan 13.1 % Taiwan 11.0 % South Korea 7.5 % United Kingdom 5.0 % Germany 4.6 % Belgium 3.5 % Finland 3.2 % Denmark 2.8 % ​ (a) Excludes money market funds.
C000133231 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Currency Hedged MSCI EAFE ETF
Class Name	iShares Currency Hedged MSCI EAFE ETF
Trading Symbol	HEFA
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Currency Hedged MSCI EAFE 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Currency Hedged MSCI EAFE ETF $ (a) 0.03 % (a) ​ (a) Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.
Expenses Paid, Amount	$ 3	[2]
Expense Ratio, Percent	0.03%	[2]
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period even as geopolitical strife and trade tensions increased. Driven by enthusiasm for artificial intelligence, information technology stocks propelled to record highs. While the European Central Bank cut its primary lending rate, the Bank of Japan increased interest rates. Japan’s central bank also engaged in buying the Japanese yen in open markets to pause the currency’s decline. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 23% of the Fund on average, contributed the most to the Fund’s return during the reporting period. Japan’s stock market accelerated to new highs, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). In the United Kingdom, which comprises about 15% of the Fund on average, the financials sector was helped by solid lending income attributed to higher interest rates. What detracted from performance? Hong Kong stocks suffered from malaise related to economic weakness in China during the reporting period. As a special administrative region of China, many stocks are dual listed in Hong Kong and China and are more susceptible to China’s recent economic slowdown and regulatory scrutiny. Hong Kong’s financials sector was particularly impacted by slowing Chinese growth, while slumping property values hindered the real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 16.81 % 11.22 % 9.08 % Fund Market 16.88 11.21 9.09 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI EAFE ® 17.40 11.27 9.21
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 6,660,168,214
Holdings Count | Holding	160
Advisory Fees Paid, Amount	$ 1,359,684
Investment Company Portfolio Turnover	12%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Portfolio composition Investment Type Percent of Net Assets Investment Companies 100.1 % Short-term Investments 21.8 % Forward foreign currency exchange contracts, net cumulative depreciation (2.0 ) % Other assets less liabilities (19.9 ) % Sector allocation (of the underlying fund) (a) Sector Percent of (b) Financials 20.4 % Industrials 17.1 % Health Care 13.7 % Consumer Discretionary 11.1 % Information Technology 9.1 % Consumer Staples 8.6 % Materials 6.6 % Communication Services 4.1 % Energy 4.0 % Utilities 3.2 % Real Estate 2.1 % ​ (a) The underlying fund is iShares MSCI EAFE ETF. ​ (b) Excludes money market funds.
C000148919 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI China A ETF
Class Name	iShares MSCI China A ETF
Trading Symbol	CNYA
Security Exchange Name	CboeBZX
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI China A 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI China A ETF $ 0.44 %
Expenses Paid, Amount	$ 41
Expense Ratio, Percent	0.44%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Emerging market equities rose during the reporting period but underperformed the broader markets as geopolitical uncertainty and a stronger U.S. dollar weighed on performance. China’s economic struggles continued, with the housing sector facing particular challenges due to a major property company defaulting and falling home prices. Overall weak domestic demand has led to substantial stimulus packages by the Chinese government in an attempt to boost retail spending and consumer confidence. These major policy interventions enacted by the Chinese government helped to ease investor concerns, but equities still underperformed the broader markets during the period. What contributed to performance? Stocks in China’s burgeoning renewable energy sector modestly contributed to the Fund’s return during the reporting period. Firms that supply hydropower generation helped to boost clean energy generation amid recent heavy deluges in several provinces. What detracted from performance? Domestic Chinese equities declined during the reporting period, pulled down by weak domestic economic growth and increasing regulatory actions from the Chinese government. Consumer staples stocks were among the largest detractors from the Fund’s return, hindered by food, beverage, and tobacco companies. Notably, decreasing consumer spending impacted premier alcoholic beverage stocks, which declined during the reporting period. In the information technology sector, semiconductor companies were negatively affected by threats of more trade sanctions and tariffs against China from the United States and other countries. Among stocks in the consumer discretionary sector, a push by several U.S. lawmakers to ban lithium-ion batteries for electric vehicles worked against these stocks. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 13, 2016 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV (14.19 ) % (0.20 ) % 2.84 % Fund Market (14.20 ) (0.02 ) 2.80 MSCI Emerging Markets Index 6.27 3.41 6.27 MSCI China A Inclusion Index (13.77 ) 0.11 2.23
Performance Inception Date	Jun. 13, 2016
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jul. 31, 2023
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 268,939,018
Holdings Count | Holding	488
Advisory Fees Paid, Amount	$ 1,071,016
Investment Company Portfolio Turnover	73%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 20.5 % Industrials 15.4 % Information Technology 14.9 % Consumer Staples 12.2 % Materials 10.9 % Consumer Discretionary 7.2 % Health Care 7.0 % Utilities 5.3 % Energy 4.0 % Communication Services 1.5 % Real Estate 1.1 % Ten largest holdings Security Percent of (a) Kweichow Moutai Co. Ltd., Class A 5.0 % Contemporary Amperex Technology Co. Ltd., Class A 2.3 % China Yangtze Power Co. Ltd., Class A 2.1 % China Merchants Bank Co. Ltd., Class A 1.9 % Wuliangye Yibin Co. Ltd., Class A 1.4 % Ping An Insurance Group Co. of China Ltd., Class A 1.3 % BYD Co. Ltd., Class A 1.3 % Agricultural Bank of China Ltd., Class A 1.1 % Industrial & Commercial Bank of China Ltd., Class A 1.0 % Industrial Bank Co. Ltd., Class A 1.0 % ​ (a) Excludes money market funds.
Largest Holdings [Text Block]	Ten largest holdings Security Percent of (a) Kweichow Moutai Co. Ltd., Class A 5.0 % Contemporary Amperex Technology Co. Ltd., Class A 2.3 % China Yangtze Power Co. Ltd., Class A 2.1 % China Merchants Bank Co. Ltd., Class A 1.9 % Wuliangye Yibin Co. Ltd., Class A 1.4 % Ping An Insurance Group Co. of China Ltd., Class A 1.3 % BYD Co. Ltd., Class A 1.3 % Agricultural Bank of China Ltd., Class A 1.1 % Industrial & Commercial Bank of China Ltd., Class A 1.0 % Industrial Bank Co. Ltd., Class A 1.0 % ​ (a) Excludes money market funds.
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after July 31, 2024 at blackrock.com/fundreports The net expense ratio increased from the prior fiscal year end primarily due to the elimination of a voluntary fee waiver during the prior fiscal year.
Material Fund Change Expenses [Text Block]	The net expense ratio increased from the prior fiscal year end primarily due to the elimination of a voluntary fee waiver during the prior fiscal year.
Updated Prospectus Phone Number	1-800-iShares (1-800-474-2737)
Updated Prospectus Web Address	blackrock.com/fundreports
C000149539 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI ACWI Low Carbon Target ETF
Class Name	iShares MSCI ACWI Low Carbon Target ETF
Trading Symbol	CRBN
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI ACWI Low Carbon Target 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI ACWI Low Carbon Target ETF $ 0.20 %
Expenses Paid, Amount	$ 22
Expense Ratio, Percent	0.20%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. Global carbon dioxide emissions reached a record high in 2023 due to continuing usage of fossil fuels, a return to pre-pandemic travel and transportation levels, and Canada’s extreme wildfire season. However, despite this rise, emissions are seeing a structural slowdown. Versus growth in advanced economies, emissions declined in 2023 helped by strong renewables deployment, a growing trend of switching from coal to gas in the United States, milder weather, and weaker industrial production in some countries. The 2023 United Nations Conference on Climate Change called on governments to speed up the transition away from fossil fuels to renewables in their next round of climate commitments. What contributed to performance? The United States is the largest component of the Fund comprising approximately 62% on average during the reporting period and was also the most significant driver of the Fund’s return. A handful of dominant information technology companies that have been able to innovate rapidly captured significant market share and generated substantial profits-dominated returns. The financials sector was helped by solid earnings results. What detracted from performance? Stocks in China were a modest detractor from the Fund’s performance during the reporting period. In the consumer discretionary sector, automotive stocks declined as they faced increased tariffs from the United States and the European Union. Shares of interactive media firms declined on falling revenue growth. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: December 8, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 17.91 % 11.25 % 9.30 % Fund Market 17.78 11.22 9.28 MSCI All Country World Index 17.02 11.05 9.04 MSCI ACWI Low Carbon Target Index 17.68 11.07 9.04
Performance Inception Date	Dec. 08, 2014
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 962,749,416
Holdings Count | Holding	1,069
Advisory Fees Paid, Amount	$ 1,783,718
Investment Company Portfolio Turnover	24%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 25.2 % Financials 18.0 % Health Care 11.3 % Industrials 10.3 % Consumer Discretionary 9.7 % Communication Services 8.6 % Consumer Staples 5.9 % Energy 3.0 % Real Estate 2.9 % Materials 2.6 % Utilities 2.5 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 63.6 % Japan 5.5 % Canada 3.3 % United Kingdom 3.1 % China 2.9 % France 2.2 % Switzerland 2.0 % India 2.0 % Taiwan 2.0 % Australia 1.6 % Other # 11.8 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000149147 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI Intl Momentum Factor ETF
Class Name	iShares MSCI Intl Momentum Factor ETF
Trading Symbol	IMTM
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI Intl Momentum Factor 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI Intl Momentum Factor ETF $ 0.30 %
Expenses Paid, Amount	$ 33
Expense Ratio, Percent	0.30%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence. With challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Stocks with momentum characteristics advanced across regions during the reporting period. As markets consistently trended upward, the momentum factor strongly contributed to returns. Japanese equities, which comprise about 39% of the Fund on average, meaningfully contributed to the Fund’s return during the reporting period. Japan’s stock market accelerated to new highs, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. In Denmark, the healthcare sector contributed to the Fund’s performance, as pharmaceutical and biotechnology stocks gained amid positive clinical trials and enthusiasm over GLP-1 weight loss drugs. What detracted from performance? Stocks in Hong Kong detracted from the Fund’s performance during the reporting period. Given Hong Kong’s status as a special administrative region of China, financials stocks were negatively impacted by increased regulatory oversight in an attempt to prevent risks that could spread to all segments of the markets. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: January 13, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 19.98 % 8.97 % 7.26 % Fund Market 19.78 9.11 7.27 MSCI ACWI ex USA Index 9.75 6.29 5.47 MSCI World ex USA Momentum Index 20.32 9.23 7.54
Performance Inception Date	Jan. 13, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 2,240,649,449
Holdings Count | Holding	306
Advisory Fees Paid, Amount	$ 5,356,821
Investment Company Portfolio Turnover	70%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Industrials 26.8 % Financials 24.0 % Information Technology 14.8 % Consumer Discretionary 11.5 % Health Care 9.2 % Materials 4.9 % Communication Services 2.6 % Real Estate 2.3 % Energy 1.7 % Consumer Staples 1.6 % Utilities 0.6 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 42.8 % France 8.2 % Germany 7.0 % Netherlands 6.3 % United Kingdom 6.2 % Canada 5.3 % Denmark 5.2 % Switzerland 4.5 % Italy 3.6 % Australia 3.6 % Other # 7.3 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000152570 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Exponential Technologies ETF
Class Name	iShares Exponential Technologies ETF
Trading Symbol	XT
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Exponential Technologies 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Exponential Technologies ETF $ 0.46 %
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.46%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. U.S. stocks powered markets higher, driven by the enthusiasm for artificial intelligence (“AI”), which was particularly evident in the information technology sector. However, market sentiment swung late in the one-year period amid a shift away from information technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? U.S. stocks, which represented approximately 62% of the Fund on average during the reporting period, contributed the most to the Fund’s return. Within the information technology sector, semiconductor manufacturers that enable the rapid advancement in technology and the creation of compact, powerful, and efficient devices advanced. Also contributing were software application companies that provide platforms and solutions to manage data analytics, supply chains, and inventory operations. Information technology stocks in Taiwan also contributed to the Fund’s returns, amid a growing need for semiconductors and passive components. What detracted from performance? Stocks in China’s information technology sector were the largest detractors of the Fund’s performance during the reporting period. Electric vehicle makers declined amid decreasing profitability and geopolitical tensions, including increased tariffs from the United States, European Union, and Latin America. Canadian stocks were hindered by the recent weak performance of lithium, a key ingredient in rechargeable batteries for phones, hybrid cars, electric bikes, and large-scale storage batteries. The fall in lithium prices was due to slowing demand for electric vehicles and a broader economic slowdown in China. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: March 19, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 1.84 % 9.66 % 10.60 % Fund Market 1.79 9.71 10.59 MSCI All Country World Index 17.02 11.05 9.14 Morningstar ® ℠ 2.03 10.04 10.92
Performance Inception Date	Mar. 19, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 3,420,686,935
Holdings Count | Holding	191
Advisory Fees Paid, Amount	$ 15,200,280
Investment Company Portfolio Turnover	45%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 58.1 % Health Care 16.8 % Financials 5.8 % Utilities 5.2 % Industrials 4.7 % Consumer Discretionary 4.0 % Communication Services 2.4 % Materials 1.8 % Real Estate 0.9 % Consumer Staples 0.3 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 59.8 % Japan 6.2 % China 5.0 % Taiwan 3.4 % Germany 3.1 % United Kingdom 2.4 % France 2.4 % Canada 2.3 % Netherlands 2.3 % South Korea 1.6 % Other # 11.5 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000061363 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI ACWI ex U.S. ETF
Class Name	iShares MSCI ACWI ex U.S. ETF
Trading Symbol	ACWX
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI ACWI ex U.S. 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI ACWI ex U.S. ETF $ 0.32 %
Expenses Paid, Amount	$ 34
Expense Ratio, Percent	0.32%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. The European Central Bank cut its primary lending rate by 0.25% in June while the Bank of Japan exited its zero-interest rate policy that it had held since 2016, raising its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 15% of the Fund on average, contributed the most to the Fund’s return during the reporting period. The country’s stock market accelerated to new highs during the reporting period, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). Indian stocks contributed, helped by growing market confidence, an infrastructure boom, and positive economic data. In the industrials sector, automotive stocks benefited from record-high car sales. What detracted from performance? Detractors from the Fund’s return during the reporting period were driven by Chinese stocks, which represent approximately 8% of the Fund on average. In particular, a push by several U.S. lawmakers to ban lithium-ion batteries for electric vehicles worked against these firms. In Hong Kong, casino stocks declined amid tightened regulations and deteriorating U.S.-China relations. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 9.50 % 6.11 % 4.07 % Fund Market 9.24 6.22 4.09 MSCI ACWI ex USA Index 9.75 6.29 4.18
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 4,566,392,285
Holdings Count | Holding	1,818
Advisory Fees Paid, Amount	$ 14,293,669
Investment Company Portfolio Turnover	6%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 22.1 % Industrials 13.8 % Information Technology 13.5 % Consumer Discretionary 10.9 % Health Care 9.7 % Consumer Staples 7.4 % Materials 7.0 % Energy 5.4 % Communication Services 5.2 % Utilities 3.2 % Real Estate 1.8 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 14.9 % United Kingdom 9.7 % Canada 7.6 % France 7.1 % China 6.9 % Switzerland 6.3 % India 5.7 % Germany 5.5 % Taiwan 5.3 % Australia 4.8 % Other # 26.2 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000082529 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI Europe Financials ETF
Class Name	iShares MSCI Europe Financials ETF
Trading Symbol	EUFN
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI Europe Financials 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI Europe Financials ETF $ 0.48 %
Expenses Paid, Amount	$ 53
Expense Ratio, Percent	0.48%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. While the war in Ukraine continued to weigh on European equities, the first half of the period saw the financials sector benefit from wider interest rate margins as interest rates remained high. As inflation moved closer to central bank targets, several countries began lowering borrowing costs, beginning with Switzerland and Sweden. In a major turning point in monetary policy, the European Central Bank cut its primary lending rate by 0.25% in June. During the second half of the reporting period, the performance of banks was helped by the prospects of lower interest rates and the hopes of increased loan demand. What contributed to performance? The United Kingdom (“U.K.”) comprised approximately 23% of the Fund on average and was a large driver of the Fund’s return during the reporting period. U.K. banks benefited from robust earnings supported by higher interest rates as well as strong liquidity positions. While Italian banks initially declined on news of the Italian Windfall Tax for Banks, a one-time tax that applies to Italian banks and foreign bank branches, stocks quickly recovered. Bank performance was boosted by substantially higher lending income, and Italian banks made significant strides in cost-cutting. Additionally, earnings for Italian financial firms were supported by expanded fees from wealth management units. German financial firms, which comprised approximately 14% of the Fund on average during the reporting period, also benefited from solid earnings and positive future guidance. What detracted from performance? For the reporting period ended July 31, 2024, there were no material detractors from the Fund’s performance. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 21.74 % 10.15 % 3.79 % Fund Market 22.11 10.30 3.87 MSCI ACWI ex USA Index 9.75 6.29 4.18 MSCI Europe Financials Index 21.48 10.14 3.87
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 1,998,357,292
Holdings Count | Holding	83
Advisory Fees Paid, Amount	$ 6,772,499
Investment Company Portfolio Turnover	5%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Industry allocation Industry Percent of (a) Banks 48.9 % Insurance 28.3 % Capital Markets 16.2 % Financial Services 6.6 % Country/Geographic allocation Country/Geographic Region Percent of (a) United Kingdom 24.3 % Switzerland 14.3 % Germany 13.5 % France 9.4 % Italy 8.9 % Spain 8.2 % Netherlands 6.4 % Sweden 6.3 % Finland 2.7 % Belgium 1.8 % Other # 4.2 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000201209 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Robotics and Artificial Intelligence Multisector ETF
Class Name	iShares Robotics and Artificial Intelligence Multisector ETF
Trading Symbol	IRBO
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Robotics and Artificial Intelligence Multisector 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Robotics and Artificial Intelligence Multisector ETF $ 0.47 %
Expenses Paid, Amount	$ 47
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. U.S. stocks powered markets higher, driven by the enthusiasm for artificial intelligence (“AI”), which was particularly evident in the information technology sector. However, market sentiment swung late in the reporting period amid a shift away from information technology stocks as uncertainty surrounding economic growth, geopolitics, and the upcoming U.S. presidential election grew. Adding to the volatility was a technical outage stemming from a major cybersecurity supplier that impacted a wide variety of companies and prompted swift analyst downgrades of the company’s stock, sending shares tumbling. What contributed to performance? U.S. stocks, which represented approximately 51% of the Fund on average during the reporting period, contributed to the Fund’s return. Increased usage and demand for AI reverberated across the information technology sector, benefiting semiconductor manufacturers that provide the backbone for the complex calculations required for AI algorithms. Application software firms gained as they provided AI solutions to increase productivity and accelerate business outcomes. What detracted from performance? Stocks of companies producing or using robotics and AI applications detracted from the Fund’s return during the reporting period. Geopolitical tensions, weak domestic demand, increased regulatory oversight, and the threat of additional trade sanctions and tariffs weighed on Chinese stocks. Within the media and entertainment industry, the threat of proposed rules designed to reduce spending and rewards in online gaming weighed on returns, although these regulations have yet to be enacted. Among interactive media and services firms, stocks of social media and Internet search companies declined. In France, high debt, low investor confidence, and a failed sale of a flagging business area sent the stock of an information technology consulting company lower. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 26, 2018 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV (1.95 ) % 7.19 % 6.85 % Fund Market (2.49 ) 7.12 6.81 MSCI All Country World Index 17.02 11.05 10.05 NYSE ® ® (1.67 ) 7.42 7.07
Performance Inception Date	Jun. 26, 2018
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jun. 05, 2024
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 638,200,718
Holdings Count | Holding	105
Advisory Fees Paid, Amount	$ 2,734,104
Investment Company Portfolio Turnover	40%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 54.1 % Communication Services 20.7 % Industrials 17.2 % Consumer Discretionary 5.9 % Financials 1.1 % Health Care 1.0 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 52.4 % China 12.6 % Japan 10.3 % Taiwan 8.0 % South Korea 2.8 % Israel 1.8 % Germany 1.7 % France 1.6 % Guernsey 1.2 % India 1.1 % Other # 6.5 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after July 31, 2024 at blackrock.com/fundreports On June 5, 2024, the Board of Trustees approved a proposal to change the fund name of iShares Robotics and Artificial Intelligence Multisector ETF to iShares Future AI & Tech ETF, the ticker from IRBO to ARTY, the fiscal year end from July 31 to March 31, and the underlying index from NYSE ® ®
Material Fund Change Name [Text Block]	On June 5, 2024, the Board of Trustees approved a proposal to change the fund name of iShares Robotics and Artificial Intelligence Multisector ETF to iShares Future AI & Tech ETF, the ticker from IRBO to ARTY, the fiscal year end from July 31 to March 31, and the underlying index from NYSE ® ®
Updated Prospectus Phone Number	1-800-iShares (1-800-474-2737)
Updated Prospectus Web Address	blackrock.com/fundreports
C000210493 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Cybersecurity and Tech ETF
Class Name	iShares Cybersecurity and Tech ETF
Trading Symbol	IHAK
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Cybersecurity and Tech 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Cybersecurity and Tech ETF $ 0.47 %
Expenses Paid, Amount	$ 51
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. U.S. stocks powered markets higher, driven by the enthusiasm for artificial intelligence (“AI”), which was particularly evident in the information technology sector. A handful of companies dominated markets due to their ability to rapidly innovate, capture significant market share, and generate substantial profits. However, market sentiment swung late in the reporting period amid a shift away from information technology stocks as uncertainty surrounding economic growth, geopolitics, and the upcoming U.S. presidential election grew. Adding to the volatility was a technical outage stemming from a major cybersecurity supplier that impacted a wide variety of companies and prompted swift analyst downgrades of the company’s stock, sending shares tumbling. What contributed to performance? U.S. stocks, which represented approximately 72% of the Fund on average during the reporting period, contributed the most to the Fund’s return. As more and more transactions are performed online, threats of financial fraud, unauthorized access, and identity theft have made cybersecurity essential. U.S. cybersecurity stocks that analyze threats and provide real-time protection gained due to the increased need for protection from cyber threats and unauthorized access to data and computer networks. Among U.S. industrials stocks, those that provide technology and services to support government transformation and national security missions benefited performance. Israeli systems software and solution providers also gained, as the country is a leader in technological innovation and spends a high percentage of its gross domestic product (“GDP”) on research, development, and innovation. What detracted from performance? On the downside, Canadian stocks detracted from the Fund’s return during the reporting period. Falling revenue due to increased competition weighed heavily on the stock of a software provider. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 11, 2019 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 18.73 % 12.41 % 13.45 % Fund Market 18.58 12.39 13.43 MSCI All Country World Index 17.02 11.05 11.22 NYSE ® ® 17.21 12.43 13.50
Performance Inception Date	Jun. 11, 2019
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 863,631,323
Holdings Count | Holding	37
Advisory Fees Paid, Amount	$ 3,445,852
Investment Company Portfolio Turnover	27%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Industry allocation Industry Percent of (a) Software 65.4 % Professional Services 13.2 % IT Services 10.9 % Communications Equipment 10.5 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 70.6 % Israel 9.4 % Japan 4.8 % Taiwan 3.6 % United Kingdom 3.4 % Denmark 2.2 % Germany 2.2 % Canada 1.7 % Malaysia 1.2 % Turkey 0.6 % South Korea 0.3 % ​ (a) Excludes money market funds.
C000055846 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI Kokusai ETF
Class Name	iShares MSCI Kokusai ETF
Trading Symbol	TOK
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI Kokusai 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI Kokusai ETF $ 0.28 %
Expenses Paid, Amount	$ 31
Expense Ratio, Percent	0.28%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. U.S. equities led markets, propelled by the information technology sector and enthusiasm over artificial intelligence (“AI”). Amid challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June, while the U.S. Federal Reserve Bank left interest rates unchanged. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? The United States is the largest component of the Fund, comprising approximately 75% on average during the reporting period, and was also the most significant driver of the Fund’s return. Performance was largely driven by a handful of dominant information technology companies that have been able to rapidly innovate, capture significant market share, and generate substantial profits. Among these stocks, those that produce semiconductors were the most significant beneficiaries of excitement for AI and the U.S. government’s efforts to increase domestic chipmaking capacity. The financials sector was helped by solid earnings results from wealth management firms as well as banks benefiting from the prospect of future rate cuts. What detracted from performance? Stocks in Hong Kong minimally detracted from the Fund’s performance during the reporting period. Given Hong Kong’s status as a special administrative region of China, financials stocks were negatively impacted by increased regulatory oversight in an attempt to prevent risks that could spread to all segments of the markets. Additionally, China’s prolonged property crisis has weighed on investment activity for financial firms. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 1, 2014 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years 10 Years Fund NAV 19.20 % 12.70 % 10.09 % Fund Market 19.39 12.70 10.13 MSCI All Country World Index 17.02 11.05 8.74 MSCI Kokusai Index 18.47 12.38 9.81
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 262,446,626
Holdings Count | Holding	1,232
Advisory Fees Paid, Amount	$ 489,111
Investment Company Portfolio Turnover	4%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 25.6 % Financials 15.4 % Health Care 12.2 % Industrials 10.3 % Consumer Discretionary 9.6 % Communication Services 7.5 % Consumer Staples 6.4 % Energy 4.5 % Materials 3.7 % Utilities 2.6 % Real Estate 2.2 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 76.1 % United Kingdom 4.1 % Canada 3.2 % France 3.0 % Switzerland 2.6 % Germany 2.3 % Australia 2.0 % Netherlands 1.3 % Denmark 1.0 % Sweden 0.9 % Other # 3.5 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000156614 [Member]
Shareholder Report [Line Items]
Fund Name	iShares MSCI Intl Value Factor ETF
Class Name	iShares MSCI Intl Value Factor ETF
Trading Symbol	IVLU
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares MSCI Intl Value Factor 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares MSCI Intl Value Factor ETF $ 0.30 %
Expenses Paid, Amount	$ 32
Expense Ratio, Percent	0.30%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence. With challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? International developed markets were impacted by geopolitical tensions and high interest rates, as central banks continued to attempt to tame high inflation. In this environment, stocks with value-oriented characteristics advanced. Stocks in Japan, which represented approximately 33% of the Fund on average, led the Fund’s return during the reporting period. Japanese stocks have benefited from resilient economic growth, corporate structural reforms, and a return to monetary policy normalization. The industrials sector was helped by construction manufacturers on increased demand for factory construction and large-scale redevelopment projects. In the United Kingdom, which comprised about 16% of the Fund on average, the financials sector was helped by solid lending income attributed to higher interest rates. What detracted from performance? In Germany, stock performance was hindered by economic challenges, including weak growth and slipping business expectations during the reporting period. In particular, healthcare stocks declined as several companies reported gloomy outlooks. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 16, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 13.34 % 8.54 % 4.93 % Fund Market 12.88 8.58 4.91 MSCI ACWI ex USA Index 9.75 6.29 4.99 MSCI World ex USA Enhanced Value Index 13.44 8.72 5.02
Performance Inception Date	Jun. 16, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 1,791,353,672
Holdings Count | Holding	357
Advisory Fees Paid, Amount	$ 5,086,180
Investment Company Portfolio Turnover	16%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 22.0 % Industrials 16.4 % Health Care 12.5 % Consumer Discretionary 9.8 % Information Technology 9.5 % Consumer Staples 8.5 % Materials 6.9 % Energy 5.6 % Communication Services 3.8 % Utilities 3.1 % Real Estate 1.9 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 31.5 % United Kingdom 17.0 % France 11.3 % Germany 10.6 % Switzerland 5.3 % Italy 4.2 % Spain 3.1 % Canada 3.0 % Netherlands 2.9 % Australia 2.0 % Other # 9.1 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000179059 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Core MSCI International Developed Markets ETF
Class Name	iShares Core MSCI International Developed Markets ETF
Trading Symbol	IDEV
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Core MSCI International Developed Markets 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Core MSCI International Developed Markets ETF $ 0.04 %
Expenses Paid, Amount	$ 4
Expense Ratio, Percent	0.04%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. The information technology sector led markets amid enthusiasm over artificial intelligence (“AI”). Amid challenging economic conditions, the European Central Bank cut its primary lending rate by 0.25% in June. However, the Bank of Japan exited its zero-interest rate policy that it had held since 2016 and raised its short-term policy rate to 0.25%. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise about 22% of the Fund on average, meaningfully contributed to the Fund’s return during the reporting period. The country’s stock market benefited from resilient economic growth, corporate structural reforms, and a return to monetary policy normalization. Banking stocks were helped as rising interest rates contributed to higher yields on loans and bonds held. The industrials sector was supported by a weaker yen, higher exports, and increased demand for factory construction and large-scale redevelopment projects. Financial stocks in the United Kingdom (“U.K.”) benefited from solid lending income attributed to higher interest rates, while performance fee income helped asset managers. What detracted from performance? Hong Kong stocks suffered from malaise related to economic weakness in China during the reporting period. As a special administrative region of China, many stocks are dual listed in Hong Kong and China and are more susceptible to China’s recent economic slowdown and regulatory scrutiny. Hong Kong’s financials sector was particularly impacted by slowing Chinese growth, while slumping property values hindered the real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: March 21, 2017 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 11.22 % 7.50 % 6.91 % Fund Market 10.98 7.66 6.91 MSCI ACWI ex USA Index 9.75 6.29 6.00 MSCI World ex USA Investable Market Index 10.82 7.25 6.62
Performance Inception Date	Mar. 21, 2017
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 14,110,677,357
Holdings Count | Holding	2,228
Advisory Fees Paid, Amount	$ 4,880,880
Investment Company Portfolio Turnover	3%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 20.7 % Industrials 17.3 % Health Care 11.3 % Consumer Discretionary 10.5 % Information Technology 9.1 % Consumer Staples 7.9 % Materials 7.6 % Energy 5.5 % Communication Services 3.8 % Utilities 3.2 % Real Estate 3.1 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 22.4 % United Kingdom 13.6 % Canada 10.5 % France 9.0 % Switzerland 8.2 % Germany 7.1 % Australia 6.8 % Netherlands 4.0 % Denmark 3.2 % Sweden 3.2 % Other # 12.0 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000154548 [Member]
Shareholder Report [Line Items]
Fund Name	iShares International Small-Cap Equity Factor ETF
Class Name	iShares International Small-Cap Equity Factor ETF
Trading Symbol	ISCF
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares International Small-Cap Equity Factor 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares International Small-Cap Equity Factor ETF $ 0.23 %
Expenses Paid, Amount	$ 24
Expense Ratio, Percent	0.23%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. Higher interest rates have worked against smaller-capitalization names, causing them to underperform their larger peers. However, market sentiment swung late in the period amid a shift away from technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Stocks with exposure to value advanced for the reporting period, as the current geopolitical and economic landscape has moved global risk appetites lower, accelerating the rotation from cyclicals stocks into defensive/growth compounders with our cyclicals versus defensive pair down. Momentum also contributed to performance. Japanese small-capitalization stocks led the Fund’s return during the reporting period. Japanese stocks, which comprise approximately 25% of the Fund on average, have benefited from resilient economic growth, corporate structural reforms, and a return to monetary policy normalization. The industrials sector was helped by construction manufacturers on increased demand for factory construction and large-scale redevelopment projects. In the United Kingdom, which comprises about 14% of the Fund on average, the financials sector was helped by solid lending income attributed to higher interest rates. What detracted from performance? Stocks in Germany detracted from the Fund’s performance during the reporting period, most notably within the materials sector. Hong Kong stocks were negatively impacted by economic weakness in China during the reporting period. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: April 28, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 9.57 % 6.63 % 6.26 % Fund Market 9.19 6.70 6.22 S&P Developed ex US Broad Market Index 5.43 (2.20 ) 0.21 STOXX International Small-Cap Equity Factor Index 9.18 6.83 6.46
Performance Inception Date	Apr. 28, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jul. 31, 2023
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 556,867,486
Holdings Count | Holding	971
Advisory Fees Paid, Amount	$ 1,265,111
Investment Company Portfolio Turnover	26%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Industrials 19.7 % Consumer Discretionary 14.5 % Financials 14.1 % Information Technology 11.6 % Materials 10.1 % Real Estate 9.8 % Health Care 4.6 % Consumer Staples 4.3 % Energy 4.2 % Communication Services 3.8 % Utilities 3.3 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 26.2 % United Kingdom 15.6 % Canada 9.9 % Australia 7.0 % Switzerland 6.3 % France 5.1 % Germany 4.8 % Sweden 4.0 % Italy 3.3 % Spain 2.8 % Other # 15.0 %
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after July 31, 2024 at blackrock.com/fundreports The net expense ratio decreased from the prior fiscal year end primarily due to a change in the Fund’s investment advisory agreement during the prior fiscal year.
Material Fund Change Expenses [Text Block]	The net expense ratio decreased from the prior fiscal year end primarily due to a change in the Fund’s investment advisory agreement during the prior fiscal year.
Updated Prospectus Phone Number	1-800-iShares (1-800-474-2737)
Updated Prospectus Web Address	blackrock.com/fundreports
C000157303 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Currency Hedged MSCI ACWI ex U.S. ETF
Class Name	iShares Currency Hedged MSCI ACWI ex U.S. ETF
Trading Symbol	HAWX
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Currency Hedged MSCI ACWI ex U.S. 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Currency Hedged MSCI ACWI ex U.S. ETF $ (a) 0.03 % (a) ​ (a) Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.
Expenses Paid, Amount	$ 3	[3]
Expense Ratio, Percent	0.03%	[3]
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period even as geopolitical strife and trade tensions increased. Market strength was driven by enthusiasm for artificial intelligence, propelling information technology stocks to record highs. While the European Central Bank cut its primary lending rate, the Bank of Japan increased interest rates. Japan’s central bank also engaged in buying the Japanese yen in open markets to pause the currency’s decline. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Japanese equities, which comprise approximately 15% of the Fund on average, contributed the most to the Fund’s return during the reporting period. The country’s stock market accelerated to new highs, helped by ongoing corporate reforms and the Bank of Japan ending its negative interest rate policy. This interest rate increase helped Japanese banks increase lending profits and net interest margins (the difference between interest revenue and interest expenses of a financial firm). Indian stocks contributed, helped by growing market confidence, an infrastructure boom, and positive economic data. In the industrials sector, automotive stocks benefited from record-high car sales. What detracted from performance? Detractors from the Fund’s return during the reporting period were driven by Chinese stocks, which represent approximately 8% of the Fund on average. In particular, a push by several U.S. lawmakers to ban lithium-ion batteries for electric vehicles worked against these firms. In Hong Kong, casino stocks declined amid tightened regulations and deteriorating U.S.-China relations. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 29, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 14.62 % 9.37 % 7.62 % Fund Market 14.45 9.36 7.61 MSCI ACWI ex USA Index 9.75 6.29 5.10 MSCI ACWI ex USA 100% Hedged to USD Index 15.45 9.55 7.73
Performance Inception Date	Jun. 29, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 229,557,895
Holdings Count | Holding	265
Advisory Fees Paid, Amount	$ 57,791
Investment Company Portfolio Turnover	9%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Portfolio composition Investment Type Percent of Net Assets Investment Companies 100.1 % Short-term Investments 44.8 % Forward foreign currency exchange contracts, net cumulative depreciation (1.2 ) % Other assets less liabilities (43.7 ) % Sector allocation (of the underlying fund) (a) Sector Percent of (b) Financials 22.1 % Industrials 13.8 % Information Technology 13.5 % Consumer Discretionary 10.9 % Health Care 9.7 % Consumer Staples 7.4 % Materials 7.0 % Energy 5.4 % Communication Services 5.2 % Utilities 3.2 % Real Estate 1.8 % ​ (a) The underlying fund is iShares MSCI ACWI ex U.S. ETF. ​ (b) Excludes money market funds.
C000246989 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Energy Storage & Materials ETF
Class Name	iShares Energy Storage & Materials ETF
Trading Symbol	IBAT
Security Exchange Name	NASDAQ
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Energy Storage & Materials ETF (the “Fund”) for the period of March 19, 2024 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the period? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Energy Storage & Materials ETF $ (a) 0.47 % (b) ​ (a) The Fund commenced operations during the reporting period. Expenses for a full reporting period would be higher than the amount shown. ​ (b) Annualized.
Expenses Paid, Amount	$ 17	[4]
Expense Ratio, Percent	0.47%	[5]
Net Assets	$ 6,718,832
Holdings Count | Holding	62
Advisory Fees Paid, Amount	$ 14,880
Investment Company Portfolio Turnover	40%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Materials 44.2 % Industrials 31.7 % Information Technology 21.4 % Consumer Discretionary 2.7 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 27.4 % United States 26.2 % South Korea 18.0 % France 9.7 % Germany 6.1 % China 5.6 % Switzerland 3.0 % Taiwan 2.6 % Norway 0.5 % Canada 0.3 % Other # 0.6 % ​ (a) Excludes money market funds. ​ # Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.
C000154547 [Member]
Shareholder Report [Line Items]
Fund Name	iShares International Equity Factor ETF
Class Name	iShares International Equity Factor ETF
Trading Symbol	INTF
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares International Equity Factor 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares International Equity Factor ETF $ 0.16 %
Expenses Paid, Amount	$ 17
Expense Ratio, Percent	0.16%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global stocks higher for the reporting period. U.S. equities led markets, propelled by the information technology sector and enthusiasm over artificial intelligence. Market sentiment swung late in the period, shifting away from information technology stocks amid growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Stocks with exposure to value advanced for the reporting period, as the current geopolitical and economic landscape has moved global risk appetites lower, accelerating the rotation from cyclicals stocks into defensive/growth compounders with our cyclicals versus defensive pair down. Momentum and quality also contributed to performance. Stocks in Japan’s financial sector contributed the most to the Fund’s return during the reporting period, benefiting from steady gains and rising dividend payments over the last year. Japanese insurance companies also contributed to performance, after several companies announced stock buybacks. In Denmark, stocks within the apparel accessories and luxury goods segment of the consumer discretionary sector contributed to performance. What detracted from performance? Hong Kong stocks suffered from malaise related to economic weakness in China during the reporting period. As a special administrative region of China, many stocks are dual listed in Hong Kong and China and are more susceptible to China’s recent economic slowdown and regulatory scrutiny. Hong Kong’s financials sector was particularly impacted by slowing Chinese growth, while slumping property values hindered the real estate sector. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: April 28, 2015 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year 5 Years Since Fund Fund NAV 13.08 % 6.96 % 5.21 % Fund Market 13.04 7.08 5.20 S&P Developed ex US Broad Market Index 5.43 (2.20 ) 0.21 STOXX International Equity Factor Index 12.62 6.93 5.25
Performance Inception Date	Apr. 28, 2015
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 1,124,337,890
Holdings Count | Holding	449
Advisory Fees Paid, Amount	$ 1,499,809
Investment Company Portfolio Turnover	22%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Financials 21.9 % Industrials 16.3 % Consumer Discretionary 13.0 % Health Care 9.9 % Information Technology 8.8 % Consumer Staples 7.9 % Materials 6.4 % Energy 4.8 % Communication Services 4.4 % Utilities 4.2 % Real Estate 2.4 % Country/Geographic allocation Country/Geographic Region Percent of (a) Japan 24.9 % United Kingdom 13.0 % France 8.7 % Switzerland 8.1 % Australia 7.2 % Germany 6.0 % Canada 5.9 % Netherlands 4.7 % Denmark 3.8 % Italy 3.8 % Other # 13.9 %
C000236410 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Neuroscience and Healthcare ETF
Class Name	iShares Neuroscience and Healthcare ETF
Trading Symbol	IBRN
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Neuroscience and Healthcare 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	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Neuroscience and Healthcare ETF $ 0.47 %
Expenses Paid, Amount	$ 48
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. The U.S. Federal Reserve Bank left rates on hold during the reporting period as the central bank sought greater confidence in slowing inflationary pressures. As inflation measures became more subdued, expectations increased for interest rate cuts in 2024. However, market sentiment swung late in the one-year period amid a shift away from information technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? U.S. stocks, which represented approximately 80% of the Fund on average during the reporting period, contributed the most to the Fund’s return. Approvals from the U.S. Food and Drug Administration for new treatments for Alzheimer’s disease and Duchenne Muscular Dystrophy benefited biotechnology firms. Firms that develop medicines for life-threatening diseases or unmet medical needs gained on announcements of strategic partnerships and licensing deals. What detracted from performance? Notable detractors from the Fund’s performance during the reporting period included a Swedish biotechnology firm that declined amid management changes that negatively impacted investor confidence. Several medical device equipment companies in the United States also declined. A company focused on skin regeneration fell on news of proposals from private U.S. health insurers that would reduce coverage for biological wounds. Another company cut its outlook for the year as the U.S. spinal cord stimulation market has failed to recover to pre-pandemic levels. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: August 24, 2022 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year Since Fund Fund NAV 4.43 % 0.96 % Fund Market 4.08 0.88 MSCI All Country World Index 17.02 15.67 NYSE ® ® 4.46 1.06
Performance Inception Date	Aug. 24, 2022
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 3,856,604
Holdings Count | Holding	54
Advisory Fees Paid, Amount	$ 18,472
Investment Company Portfolio Turnover	47%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Industry allocation Industry Percent of (a) Biotechnology 62.3 % Pharmaceuticals 28.8 % Health Care Equipment & Supplies 8.6 % Life Sciences Tools & Services 0.3 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 81.0 % Netherlands 5.0 % South Korea 3.6 % Denmark 3.2 % Ireland 2.8 % Australia 2.7 % Sweden 1.1 % China 0.3 % Italy 0.3 % ​ (a) Excludes money market funds.
C000210492 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Future Cloud 5G and Tech ETF
Class Name	iShares Future Cloud 5G and Tech ETF
Trading Symbol	IDAT
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Future Cloud 5G and Tech 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Future Cloud 5G and Tech ETF $ 0.47 %
Expenses Paid, Amount	$ 52
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. U.S. stocks powered markets higher, driven by the enthusiasm for artificial intelligence (“AI”), which was particularly evident in the information technology sector. A handful of companies dominated markets due to their ability to rapidly innovate, capture significant market share, and generate substantial profits. However, market sentiment swung late in the one-year period amid a shift away from information technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? U.S. stocks, which represented approximately 77% of the Fund on average during the reporting period, contributed the most to the Funds’s return, led by information technology stocks. Increased usage and demand for AI reverberated across the information technology sector. Semiconductor manufacturers benefited, as they provide the backbone for the complex calculations required for AI algorithms. Among technology hardware stocks, firms that provide data-driven networking solutions, particularly in data centers and cloud environments, also benefited from the increased AI usage. Memory solution providers also gained, given the substantial requirements needed to run generative AI applications. Outside of the United States, semiconductor firms in Taiwan also advanced on strong demand for the chips that are needed for mobile phones. What detracted from performance? There were only minimal detractors to the Fund’s performance during the reporting period. Several application software and systems software stocks declined as they faced increased competition, lower-than-expected revenue, and reduced future guidance. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: June 8, 2021 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year Since Fund Fund NAV 21.04 % 7.49 % Fund Market 20.96 7.41 MSCI All Country World Index 17.02 5.88 Morningstar ® ℠ 21.23 7.56
Performance Inception Date	Jun. 08, 2021
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jun. 26, 2024
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 7,376,700
Holdings Count | Holding	49
Advisory Fees Paid, Amount	$ 30,826
Investment Company Portfolio Turnover	37%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Industry allocation Industry Percent of (a) Semiconductors & Semiconductor Equipment 35.0 % Communications Equipment 15.3 % Technology Hardware, Storage & Peripherals 11.8 % Software 9.8 % IT Services 9.0 % Specialized REITs 6.1 % Diversified Telecommunication Services 5.6 % Electronic Equipment, Instruments & Components 4.9 % Chemicals 2.5 % Country/Geographic allocation Country/Geographic Region Percent of (a) United States 77.3 % Taiwan 4.3 % Japan 3.7 % Finland 2.8 % Sweden 2.6 % China 2.3 % Spain 1.9 % Germany 1.9 % Australia 1.3 % Italy 1.3 % Singapore 0.6 % ​ (a) Excludes money market funds.
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available approximately 120 days after July 31, 2024 at blackrock.com/fundreports On June 26, 2024, the Fund changed from non-diversified to diversified under the Investment Company Act of 1940 and removed the Non-Diversification Risk.
Material Fund Change Risks Change [Text Block]	On June 26, 2024, the Fund changed from non-diversified to diversified under the Investment Company Act of 1940 and removed the Non-Diversification Risk.
Updated Prospectus Phone Number	1-800-iShares (1-800-474-2737)
Updated Prospectus Web Address	blackrock.com/fundreports
C000221317 [Member]
Shareholder Report [Line Items]
Fund Name	iShares Virtual Work and Life Multisector ETF
Class Name	iShares Virtual Work and Life Multisector ETF
Trading Symbol	IWFH
Security Exchange Name	NYSEArca
Annual or Semi-Annual Statement [Text Block]	This annual shareholder report contains important information about iShares Virtual Work and Life Multisector 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 .
Material Fund Change Notice [Text Block]	This report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number	1‑800‑iShares (1‑800‑474‑2737)
Additional Information Website	blackrock.com/fundreports
Expenses [Text Block]	What were the Fund costs for the last year? (based on a hypothetical $10,000 investment) Fund name Costs of a $10,000 Costs paid as a percentage of a iShares Virtual Work and Life Multisector ETF $ 0.47 %
Expenses Paid, Amount	$ 46
Expense Ratio, Percent	0.47%
Factors Affecting Performance [Text Block]	How did the Fund perform last year? Slowing inflationary pressures and hopes of interest rate cuts drove global equities higher for the reporting period. U.S. stocks powered markets higher, driven by the enthusiasm for artificial intelligence, which was particularly evident in the information technology sector. However, market sentiment swung late in the one-year period amid a shift away from information technology stocks and growing uncertainty about economic growth, geopolitics, and the upcoming U.S. presidential election. What contributed to performance? Indian equities contributed the most to the Fund’s return during the reporting period. The country overtook China as the world’s most populous country and has benefited from strong economic growth. In the country’s consumer discretionary sector, companies that provide delivery services advanced amid solid financial performance and an increasing customer base. Information technology stocks in Israel also advanced, including those that provide workplace management project services and digital solutions. What detracted from performance? As companies started to require employees to return to the office, global stocks of companies focused on working and studying from home detracted from the Fund's performance. Chinese stocks, which represented approximately 13% of the Fund on average during the reporting period, detracted from the Fund’s return. E-commerce firms and those that support them declined amid growing concerns about China’s economic health and the state of the country’s property sector. In Germany, a major global food deliverer slumped on news of antitrust violations and fines totaling over $400 million. The views expressed reflect the opinions of BlackRock as of the date of this report and are subject to change based on changes in market, economic or other conditions. These views are not intended to be a forecast of future events and are no guarantee of future results.
Performance Past Does Not Indicate Future [Text]	Past performance is not an indication of future results.
Line Graph [Table Text Block]	Fund performance Cumulative performance: September 29, 2020 through July 31, 2024 Initial investment of $10,000 See “Average annual total returns” for additional information on fund performance.
Average Annual Return [Table Text Block]	Average annual total returns 1 Year Since Fund Fund NAV (5.16 ) % (11.57 ) % Fund Market (5.33 ) (11.63 ) MSCI All Country World Index 17.02 11.92 NYSE ® ® (4.48 ) (11.10 )
Performance Inception Date	Sep. 29, 2020
No Deduction of Taxes [Text Block]	Performance results do not reflect the deduction of taxes that a shareholder would pay on fund distributions or on the redemption or sale of fund shares.
Material Change Date	Jun. 05, 2024
Updated Performance Information Location [Text Block]	Visit iShares.com
Net Assets	$ 3,072,103
Holdings Count | Holding	72
Advisory Fees Paid, Amount	$ 14,006
Investment Company Portfolio Turnover	43%
Additional Fund Statistics [Text Block]	Key Fund statistics Net Assets $ % Number of Portfolio Holdings $ % Net Investment Advisory Fees $ % Portfolio Turnover Rate $ %
Holdings [Text Block]	What did the Fund invest in? (as of July 31, 2024) Sector allocation Sector Percent of (a) Information Technology 41.1 % Communication Services 30.4 % Consumer Discretionary 19.2 % Consumer Staples 6.1 % Health Care 3.2 % Ten largest holdings Security Percent of (a) Zomato Ltd. 2.5 % Nexon Co. Ltd. 2.5 % Braze Inc., Class A 2.4 % Match Group Inc. 2.3 % Tyler Technologies Inc. 2.3 % Dropbox Inc., Class A 2.2 % Spotify Technology SA 2.2 % Electronic Arts Inc. 2.2 % Cloudflare Inc., Class A 2.2 % Stride Inc. 2.2 % ​ (a) Excludes money market funds.
Largest Holdings [Text Block]	Ten largest holdings Security Percent of (a) Zomato Ltd. 2.5 % Nexon Co. Ltd. 2.5 % Braze Inc., Class A 2.4 % Match Group Inc. 2.3 % Tyler Technologies Inc. 2.3 % Dropbox Inc., Class A 2.2 % Spotify Technology SA 2.2 % Electronic Arts Inc. 2.2 % Cloudflare Inc., Class A 2.2 % Stride Inc. 2.2 % ​ (a) Excludes money market funds.
Material Fund Change [Text Block]	Material Fund Changes This is a summary of certain changes to the Fund since July 31, 2023. On June 5, 2024, the Board of Trustees of the Fund approved the liquidation of the Fund. After the close of business on August 12, 2024, the Fund no longer accepted creation orders. Trading in the Fund halted prior to market open on August 13, 2024. Proceeds of the liquidation were sent to shareholders on August 15, 2024.
[1]Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.[2]Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.[3]Excludes fees and expenses incurred indirectly as a result of investments in underlying funds.[4]The Fund commenced operations during the reporting period. Expenses for a full reporting period would be higher than the amount shown.[5]Annualized.

Shareholder Report, Line Graph

Shareholder Report, Line Graph (Details) - USD ($)	12 Months Ended	16 Months Ended	23 Months Ended	38 Months Ended	46 Months Ended	60 Months Ended	62 Months Ended	64 Months Ended	73 Months Ended	88 Months Ended	98 Months Ended	109 Months Ended	110 Months Ended	111 Months Ended	112 Months Ended	115 Months Ended	116 Months Ended	120 Months Ended
	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Jul. 31, 2024	Apr. 30, 2024	Jan. 31, 2024	Oct. 31, 2023	Jul. 31, 2023	Apr. 30, 2023	Mar. 28, 2023	Jan. 31, 2023	Oct. 31, 2022	Aug. 24, 2022	Jul. 31, 2022	Jan. 31, 2022	Jul. 31, 2021	Jun. 08, 2021	Jan. 31, 2021	Sep. 29, 2020	Jul. 31, 2020	Jul. 31, 2019	Jun. 11, 2019	Apr. 16, 2019	Jul. 31, 2018	Jun. 26, 2018	Jul. 31, 2017	Mar. 20, 2017	Jul. 31, 2016	Jun. 13, 2016	Jul. 31, 2015	Jun. 29, 2015	Jun. 16, 2015	Apr. 27, 2015	Mar. 19, 2015	Jan. 13, 2015	Dec. 08, 2014	Jul. 31, 2014
C000012200 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160	$ 17,160				$ 15,793						$ 14,027		$ 17,300				$ 13,577	$ 12,467			$ 12,280		$ 11,288		$ 10,020		$ 10,306							$ 10,000
Average Annual Return, Percent	8.66%					6.60%												5.55%
C000012200 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	8.69%					6.75%												5.62%
C000153270 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 20,591	20,591	20,591	20,591	20,591	$ 20,591	20,591	20,591	20,591	20,591	20,591	20,591	20,591	$ 20,591	20,591	20,591	20,591	$ 20,591				17,165						15,144		17,030				12,887	12,523			12,792		11,407		9,509		9,723			$ 10,000
Average Annual Return, Percent	19.96%					10.46%								8.11%
C000153270 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	20.12%					10.52%								8.09%
C000052896 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 16,372	16,372	16,372	16,372	16,372	$ 16,372	16,372	16,372	16,372	16,372	16,372	16,372	16,372	$ 16,372	16,372	16,372	16,372	$ 16,372				15,016						14,019		17,481				12,590	12,611			13,620		12,494		10,393		10,255							10,000
Average Annual Return, Percent	8.98%					5.36%												5.05%
C000052896 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	8.70%					5.51%												5.10%
C000061364 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 23,429	23,429	23,429	23,429	23,429	$ 23,429	23,429	23,429	23,429	23,429	23,429	23,429	23,429	23,429	23,429	23,429	23,429	$ 23,429				20,015						17,752		19,790				14,864	13,854			13,432		12,057		10,278		10,291							10,000
Average Annual Return, Percent	17.06%					11.08%												8.89%
C000061364 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	16.91%					11.14%												8.91%
C000099140 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 15,110	15,110	15,110	15,110	15,110	$ 15,110	15,110	15,110	15,110	15,110	15,110	15,110	15,110	15,110	15,110	15,110	15,110	$ 15,110				13,726						12,754		14,620				12,431	12,883			12,670		11,913		11,021		10,680							10,000
Average Annual Return, Percent	10.09%					3.24%												4.21%
C000099140 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	9.68%					3.29%												4.21%
C000119716 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 15,423	15,423	15,423	15,423	15,423	$ 15,423	15,423	15,423	15,423	15,423	15,423	15,423	15,423	15,423	15,423	15,423	15,423	$ 15,423				14,041						12,457		14,718				11,347	11,260			11,576		10,880		9,137		9,548							10,000
Average Annual Return, Percent	9.84%					6.49%												4.43%
C000119716 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	9.68%					6.64%												4.46%
C000140338 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 16,297	16,297	16,297	16,297	16,297	$ 16,297	16,297	16,297	16,297	16,297	16,297	16,297	16,297	16,297	16,297	16,297	16,297	$ 16,297				14,681						13,259		15,241				11,935	12,235			12,435		11,484		9,979		10,058							10,000
Average Annual Return, Percent	11.01%					5.90%												5.01%
C000140338 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	10.59%					5.95%												5.01%
C000149148 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 19,590	19,590	19,590	19,590	19,590	$ 19,590	19,590	19,590	19,590	19,590	19,590	19,590	19,590	19,590	19,590	$ 19,590	19,590	$ 19,590				17,573						15,477		17,951				13,597	13,091			12,711		11,773		10,376		10,712					$ 10,000
Average Annual Return, Percent	11.48%					8.40%										7.30%
C000149148 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	11.11%					8.49%										7.28%
C000012081 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 16,007	16,007	16,007	16,007	16,007	$ 16,007	16,007	16,007	16,007	16,007	16,007	16,007	16,007	16,007	16,007	$ 16,007	16,007	$ 16,007				14,385						12,407		14,400				11,015	11,218			11,521		10,836		9,208		9,959							10,000
Average Annual Return, Percent	11.27%					7.37%												4.82%
C000012081 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	11.22%					7.52%												4.87%
C000012201 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 14,180	14,180	14,180	14,180	14,180	$ 14,180	14,180	14,180	14,180	14,180	14,180	14,180	14,180	14,180	14,180	14,180	14,180	$ 14,180				12,450						10,428		11,487				8,651	9,884			10,634		10,261		8,377		9,584							10,000
Average Annual Return, Percent	13.89%					7.48%												3.55%
C000012201 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	13.35%					7.60%												3.57%
C000012094 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 7,987	7,987	7,987	7,987	7,987	$ 7,987	7,987	7,987	7,987	7,987	7,987	7,987	7,987	7,987	7,987	7,987	7,987	$ 7,987				9,152						8,911		11,654				11,787	11,490			11,658		11,132		8,961		10,082							10,000
Average Annual Return, Percent	(12.73%)					(7.01%)												(2.22%)
C000012094 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	(13.07%)					(6.83%)												(2.11%)
C000050168 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 17,031	17,031	17,031	17,031	17,031	$ 17,031	17,031	17,031	17,031	17,031	17,031	17,031	17,031	17,031	17,031	17,031	17,031	$ 17,031				15,318						14,174		18,810				12,817	12,446			13,879		12,716		10,194		10,634							10,000
Average Annual Return, Percent	11.18%					6.47%												5.47%
C000050168 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	10.98%					6.63%												5.52%
C000156613 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 15,052	15,052	15,052	15,052	15,052	$ 15,052	15,052	15,052	15,052	15,052	15,052	15,052	$ 15,052	15,052	15,052	15,052	15,052	$ 15,052				14,063						12,626		14,843				11,259	11,759			12,114		11,441		9,937		9,964		$ 10,000
Average Annual Return, Percent	7.04%					5.06%							4.58%
C000156613 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	7.11%					5.24%							4.58%
C000157306 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 21,759	21,759	21,759	21,759	21,759	$ 21,759	21,759	21,759	21,759	21,759	21,759	$ 21,759	$ 21,759	21,759	21,759	21,759	21,759	21,759				18,865						17,047		18,324				13,187	13,542			13,968		12,382		10,085		10,328	$ 10,000
Average Annual Return, Percent	15.34%					9.95%						8.93%
C000157306 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	15.35%					9.92%						8.93%
C000205801 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 12,680	12,680	12,680	12,680	12,680	$ 12,680	12,680	$ 12,680	12,680	12,680	12,680	$ 12,680	12,680	12,680	12,680	12,680	12,680	12,680				19,261						16,870		20,213				11,941	9,559		$ 10,000
Average Annual Return, Percent	(34.17%)					5.81%		4.59%
C000205801 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	(34.24%)					5.76%		4.53%
C000065072 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 13,396	13,396	13,396	13,396	13,396	$ 13,396	13,396	$ 13,396	13,396	13,396	13,396	13,396	13,396	13,396	13,396	13,396	13,396	$ 13,396				12,807						12,123		15,251				12,937	11,600			12,034		11,514		9,108		9,278							10,000
Average Annual Return, Percent	4.60%					2.92%												2.97%
C000065072 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	4.63%					3.11%												3.05%
C000119715 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 16,391	16,391	16,391	16,391	16,391	$ 16,391	16,391	16,391	16,391	16,391	16,391	16,391	16,391	16,391	16,391	16,391	16,391	$ 16,391				14,735						12,820		15,008				11,375	11,524			11,896		11,116		9,391		10,016							10,000
Average Annual Return, Percent	11.24%					7.30%												5.07%
C000119715 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	10.99%					7.44%												5.10%
C000140337 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 16,457	16,457	16,457	16,457	16,457	$ 16,457	16,457	16,457	16,457	16,457	16,457	16,457	16,457	16,457	16,457	16,457	16,457	$ 16,457				14,774						12,537		14,890				11,080	11,153			11,613		10,918		9,058		9,997							10,000
Average Annual Return, Percent	11.40%					8.09%												5.11%
C000140337 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	11.40%					8.26%												5.10%
C000212225 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 10,552	10,552	10,552	10,552	10,552	$ 10,552	$ 10,552	10,552	10,552	10,552	10,552	10,552	10,552	10,552	10,552	10,552	10,552	$ 10,552				10,052						13,233		20,711				15,399	11,287	$ 10,000
Average Annual Return, Percent	4.98%					(1.34%)	1.05%
C000212225 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	4.70%					(1.39%)	1.01%
C000240517 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 8,715	$ 8,715	8,715	8,715	8,715	$ 8,715	$ 8,715	8,715	8,715	8,715	8,715	8,715	8,715	8,715	8,715	8,715	8,715	8,715	$ 8,694	$ 8,266	$ 7,995	10,854	$ 9,798	$ 10,000
Average Annual Return, Percent	(19.71%)	(9.72%)
C000240517 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	(19.69%)	(9.82%)
C000133231 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 23,843	$ 23,843	23,843	23,843	23,843	$ 23,843	23,843	23,843	23,843	23,843	23,843	23,843	23,843	23,843	23,843	23,843	23,843	$ 23,843				20,411						17,462		17,514				13,347	14,011			13,676		12,440		10,456		11,542							10,000
Average Annual Return, Percent	16.81%					11.22%												9.08%
C000133231 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	16.88%					11.21%												9.09%
C000148919 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 12,558	12,558	12,558	12,558	12,558	$ 12,558	12,558	12,558	12,558	12,558	$ 12,558	12,558	12,558	12,558	12,558	12,558	12,558	$ 12,558				14,635						16,181		18,855				16,284	12,682			11,532		12,312		10,647	$ 10,000
Average Annual Return, Percent	(14.19%)					(0.20%)					2.84%
C000148919 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	(14.20%)					(0.02%)					2.80%
C000149539 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 23,578	23,578	23,578	23,578	23,578	$ 23,578	23,578	23,578	23,578	23,578	$ 23,578	23,578	23,578	23,578	23,578	23,578	$ 23,578	23,578				19,996						17,773		19,922				14,925	13,835			13,326		12,096		10,314		10,346						$ 10,000
Average Annual Return, Percent	17.91%					11.25%											9.30%
C000149539 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	17.78%					11.22%											9.28%
C000149147 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 19,531	19,531	19,531	19,531	19,531	$ 19,531	19,531	19,531	19,531	19,531	19,531	19,531	19,531	19,531	19,531	$ 19,531	$ 19,531	19,531				16,278						14,522		17,305				14,446	12,711			12,641		11,879		10,618		10,863					10,000
Average Annual Return, Percent	19.98%					8.97%										7.26%
C000149147 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	19.78%					9.11%										7.27%
C000152570 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 25,714	25,714	25,714	25,714	25,714	$ 25,714	25,714	25,714	25,714	25,714	25,714	25,714	25,714	25,714	$ 25,714	$ 25,714	25,714	25,714				25,248						22,333		27,206				19,956	16,217			15,494		13,302		10,408		10,190				$ 10,000
Average Annual Return, Percent	1.84%					9.66%									10.60%
C000152570 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	1.79%					9.71%									10.59%
C000061363 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 14,899	14,899	14,899	14,899	14,899	$ 14,899	14,899	14,899	14,899	14,899	14,899	14,899	14,899	14,899	$ 14,899	14,899	14,899	$ 14,899				13,606						12,045		14,178				11,106	11,074			11,331		10,698		9,019		9,546							10,000
Average Annual Return, Percent	9.50%					6.11%												4.07%
C000061363 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	9.24%					6.22%												4.09%
C000082529 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 14,500	14,500	14,500	14,500	14,500	$ 14,500	14,500	14,500	14,500	14,500	14,500	14,500	14,500	14,500	14,500	14,500	14,500	$ 14,500				11,911						9,027		10,488				7,546	8,943			10,223		10,670		7,294		10,098							10,000
Average Annual Return, Percent	21.74%					10.15%												3.79%
C000082529 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	22.11%					10.30%												3.87%
C000201209 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 14,979	14,979	14,979	14,979	14,979	$ 14,979	14,979	14,979	$ 14,979	14,979	14,979	14,979	14,979	14,979	14,979	14,979	14,979	$ 14,979				15,277						12,466		18,548				13,364	10,584			9,928	$ 10,000
Average Annual Return, Percent	(1.95%)					7.19%			6.85%
C000201209 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	(2.49%)					7.12%			6.81%
C000210493 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 19,125	19,125	19,125	19,125	19,125	$ 19,125	$ 19,125	19,125	$ 19,125	19,125	19,125	19,125	19,125	19,125	19,125	19,125	19,125	19,125				16,108						14,975		17,770				13,625	10,658
Average Annual Return, Percent	18.73%					12.41%	13.45%
C000210493 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	18.58%					12.39%	13.43%
C000055846 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 26,145	26,145	26,145	26,145	26,145	$ 26,145	$ 26,145	26,145	26,145	26,145	26,145	26,145	26,145	26,145	26,145	26,145	26,145	$ 26,145				21,934						19,325		21,111				15,522	14,381			13,750		12,236		10,492		10,480							10,000
Average Annual Return, Percent	19.20%					12.70%												10.09%
C000055846 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	19.39%					12.70%												10.13%
C000156614 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 15,508	15,508	15,508	15,508	15,508	$ 15,508	15,508	15,508	15,508	15,508	15,508	15,508	$ 15,508	15,508	15,508	15,508	15,508	$ 15,508				13,683						11,290		12,275				8,898	10,295			11,288		10,599		8,760		10,065		10,000
Average Annual Return, Percent	13.34%					8.54%							4.93%
C000156614 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	12.88%					8.58%							4.91%
C000179059 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 16,362	16,362	16,362	16,362	16,362	$ 16,362	16,362	16,362	16,362	$ 16,362	16,362	16,362	$ 16,362	16,362	16,362	16,362	16,362	16,362				14,711						12,915		14,942				11,266	11,395			11,686			$ 10,000
Average Annual Return, Percent	11.22%					7.50%				6.91%
C000179059 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	10.98%					7.66%				6.91%
C000154548 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 17,540	17,540	17,540	17,540	17,540	$ 17,540	17,540	17,540	17,540	$ 17,540	17,540	17,540	17,540	$ 17,540	17,540	17,540	17,540	17,540				16,008						14,999		17,402				12,870	12,722			13,650		12,325		10,365		10,115			10,000
Average Annual Return, Percent	9.57%					6.63%								6.26%
C000154548 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	9.19%					6.70%								6.22%
C000157303 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 19,490	19,490	19,490	19,490	19,490	$ 19,490	19,490	19,490	19,490	19,490	19,490	$ 19,490	19,490	$ 19,490	19,490	19,490	19,490	19,490				17,003						14,941		15,732				12,411	12,455			12,241		11,225		9,498		10,210	10,000
Average Annual Return, Percent	14.62%					9.37%						7.62%
C000157303 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	14.45%					9.36%						7.61%
C000154547 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 16,007	16,007	16,007	16,007	16,007	$ 16,007	16,007	16,007	16,007	16,007	16,007	$ 16,007	16,007	$ 16,007	16,007	16,007	16,007	16,007				14,156						12,270		14,262				10,973	11,434			12,198		11,311		9,518		9,979			10,000
Average Annual Return, Percent	13.08%					6.96%								5.21%
C000154547 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	13.04%					7.08%								5.20%
C000236410 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 10,188	10,188	$ 10,188	10,188	10,188	$ 10,188	10,188	10,188	10,188	10,188	10,188	10,188	10,188	$ 10,188	10,188	10,188	10,188	10,188	9,322	10,110	7,673	9,755	9,789		$ 10,643	$ 9,983	$ 10,000
Average Annual Return, Percent	4.43%		0.96%
C000236410 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	4.08%		0.88%
C000210492 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 12,553	12,553	$ 12,553	$ 12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553	12,553		11,263		10,371			9,419			9,030	$ 11,062	10,435	$ 10,000
Average Annual Return, Percent	21.04%			7.49%
C000210492 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	20.96%			7.41%
C000221317 [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund NAV
Account Value	$ 6,237	6,237	6,237	$ 6,237	$ 6,237	6,237	6,237	6,237	6,237	6,237	6,237	6,237	6,237	6,237	6,237	6,237	6,237	6,237		6,019		6,577			6,095			5,842	7,949	11,211		$ 12,406	$ 10,000
Average Annual Return, Percent	(5.16%)				(11.57%)
C000221317 [Member] | Without Sales Load [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Fund Market
Average Annual Return, Percent	(5.33%)				(11.63%)
MSCI ACWI ex USA Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI ACWI ex USA Index
Account Value	$ 15,066	15,066	15,066	15,066	$ 15,066	$ 15,066	15,066	15,066	15,066	$ 15,066	15,066	$ 15,066	$ 15,066	15,066	15,066	$ 15,066	15,066	$ 15,066				13,728						12,104		14,285				11,179	11,106			11,364		10,727	10,000	9,014		9,543	10,000	10,000			10,000		10,000
Average Annual Return, Percent	9.75%					6.29%				6%		5.10%	4.99%			5.47%		4.18%
MSCI EAFE Growth Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE Growth Index
Account Value	$ 17,558	17,558	17,558	17,558	17,558	$ 17,558	17,558	17,558	17,558	$ 17,558	17,558	$ 17,558	$ 17,558	17,558	17,558	$ 17,558	17,558	$ 17,558				16,167						14,236		17,600				13,803	12,638			12,420		11,391		10,083		10,341							10,000
Average Annual Return, Percent	8.60%					6.80%												5.79%
STOXX Global Equity Factor Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	STOXX Global Equity Factor Index
Account Value	$ 20,897	20,897	20,897	20,897	20,897	$ 20,897	20,897	20,897	20,897	20,897	20,897	20,897	20,897	$ 20,897	20,897	20,897	20,897	$ 20,897				17,404						15,346		17,267				13,040	12,630			12,888		11,522		9,579		9,757			10,000
Average Annual Return, Percent	20.07%					10.60%								8.29%
MSCI EAFE Small Cap Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE Small Cap Index
Account Value	$ 16,483	16,483	16,483	16,483	16,483	$ 16,483	16,483	16,483	16,483	16,483	16,483	16,483	16,483	$ 16,483	16,483	16,483	16,483	$ 16,483				15,109						14,000		17,567				12,664	12,610			13,648		12,496		10,390		10,249							10,000
Average Annual Return, Percent	9.09%					5.50%												5.12%
MSCI All Country World Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI All Country World Index
Account Value	$ 13,286	$ 13,286	$ 13,286	$ 13,286	$ 13,286	$ 13,286	$ 13,286	$ 13,286	$ 13,286	13,286	13,286	13,286	13,286	13,286	$ 13,286	13,286	$ 13,286	$ 13,286	12,291	11,817	10,262	11,354	10,464	10,000		9,261	10,000	13,070		14,601	10,000	11,466	10,000	10,963	10,227		10,000	13,047	10,000	11,757		10,044		10,088				10,000		10,000
Average Annual Return, Percent	17.02%	23.64%	15.67%	5.88%	11.92%	11.05%	11.22%	10.64%	10.05%						9.14%		9.04%	8.74%
MSCI Pacific IMI [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI Pacific IMI
Account Value	$ 16,188	$ 16,188	$ 16,188	$ 16,188	$ 16,188	$ 16,188	$ 16,188	$ 16,188	$ 16,188	16,188	16,188	16,188	16,188	16,188	$ 16,188	16,188	$ 16,188	$ 16,188				14,545						13,056		15,059				11,888	12,195			12,437		11,504		10,016		10,048							10,000
Average Annual Return, Percent	11.30%					5.83%												4.93%
MSCI EAFE Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE Index
Account Value	$ 16,048	16,048	16,048	16,048	16,048	$ 16,048	16,048	16,048	16,048	16,048	16,048	16,048	16,048	16,048	16,048	16,048	16,048	$ 16,048				14,431						12,356		14,420				11,066	11,254			11,555		10,860		9,221		9,972							10,000
Average Annual Return, Percent	11.21%					7.36%												4.84%
MSCI EAFE Value Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE Value Index
Account Value	$ 14,325	14,325	14,325	14,325	14,325	$ 14,325	14,325	14,325	14,325	14,325	14,325	14,325	14,325	14,325	14,325	14,325	14,325	$ 14,325				12,577						10,460		11,609				8,734	9,963			10,710		10,320		8,409		9,610							10,000
Average Annual Return, Percent	13.90%					7.53%												3.66%
FTSE China 50 Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	FTSE China 50 Index
Account Value	$ 8,656	8,656	8,656	8,656	8,656	$ 8,656	8,656	8,656	8,656	8,656	8,656	8,656	8,656	8,656	8,656	8,656	8,656	$ 8,656				9,717						9,503		12,320				12,318	11,909			12,003		11,374		9,083		10,148							10,000
Average Annual Return, Percent	(10.92%)					(6.18%)												(1.43%)
MSCI Europe Small Cap Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI Europe Small Cap Index
Account Value	$ 16,964	16,964	16,964	16,964	16,964	$ 16,964	16,964	16,964	16,964	16,964	16,964	16,964	16,964	16,964	16,964	16,964	16,964	$ 16,964				15,299						14,087		18,792				12,774	12,391			13,825		12,658		10,145		10,601							10,000
Average Annual Return, Percent	10.88%					6.48%												5.43%
MSCI EAFE Small Cap 100 Hedged to USD Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE Small Cap 100% Hedged to USD Index
Account Value	$ 22,115	22,115	22,115	22,115	22,115	$ 22,115	22,115	22,115	22,115	22,115	22,115	$ 22,115	22,115	22,115	22,115	22,115	22,115	$ 22,115				18,997						17,083		18,458				13,293	13,578			13,960		12,332		10,091		10,240	10,000
Average Annual Return, Percent	16.41%					10.25%						9.13%
NYSE FactSet Global Autonomous Driving and Electric Vehicle Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	NYSE® FactSet® Global Autonomous Driving and Electric Vehicle Index
Account Value	$ 12,531	12,531	12,531	12,531	12,531	$ 12,531	12,531	$ 12,531	12,531	12,531	12,531	$ 12,531	12,531	12,531	12,531	12,531	12,531	12,531				19,345						16,885		20,242				11,947	9,551		$ 10,000
Average Annual Return, Percent	(35.22%)					5.58%		4.36%
NYSE FactSet Global Genomics and Immuno Biopharma Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	NYSE® FactSet® Global Genomics and Immuno Biopharma Index
Account Value	$ 10,620	10,620	10,620	10,620	10,620	$ 10,620	$ 10,620	$ 10,620	10,620	10,620	10,620	10,620	10,620	10,620	10,620	10,620	10,620	10,620				10,114						13,228		20,655				15,358	11,263	$ 10,000
Average Annual Return, Percent	5.01%					(1.17%)	1.18%
MSCI Emerging Markets Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI Emerging Markets Index
Account Value	$ 12,958	12,958	12,958	12,958	12,958	$ 12,958	$ 12,958	12,958	12,958	12,958	$ 12,958	12,958	12,958	12,958	12,958	12,958	12,958	$ 12,958				12,194						11,254		14,084				11,674	10,957			11,201		10,733		8,597	10,000	8,662							10,000
Average Annual Return, Percent	6.27%					3.41%					6.27%							2.63%
MSCI World ex USA Momentum Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI World ex USA Momentum Index
Account Value	$ 20,014	20,014	20,014	20,014	20,014	$ 20,014	20,014	20,014	20,014	20,014	$ 20,014	20,014	20,014	20,014	20,014	$ 20,014	20,014	$ 20,014				16,634						14,724		17,566				14,660	12,870			12,797		11,990		10,668		10,912					10,000
Average Annual Return, Percent	20.32%					9.23%										7.54%
Morningstar Exponential Technologies IndexSM [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Morningstar® Exponential Technologies Index℠
Account Value	$ 26,392	26,392	26,392	26,392	26,392	$ 26,392	26,392	26,392	26,392	26,392	26,392	26,392	26,392	26,392	$ 26,392	$ 26,392	26,392	26,392				25,867						22,779		27,615				20,176	16,354			15,590		13,330		10,409		10,193				$ 10,000
Average Annual Return, Percent	2.03%					10.04%									10.92%
MSCI Europe Financials Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI Europe Financials Index
Account Value	$ 14,617	14,617	14,617	14,617	14,617	$ 14,617	14,617	14,617	14,617	14,617	14,617	14,617	14,617	14,617	$ 14,617	14,617	14,617	$ 14,617				12,032						9,072		10,626				7,618	9,020			10,308		10,748		7,322		10,131							10,000
Average Annual Return, Percent	21.48%					10.14%												3.87%
NYSE FactSet Global Robotics and Artificial Intelligence Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	NYSE® FactSet® Global Robotics and Artificial Intelligence Index
Account Value	$ 15,164	15,164	15,164	15,164	15,164	$ 15,164	15,164	15,164	$ 15,164	15,164	15,164	15,164	15,164	15,164	15,164	15,164	15,164	$ 15,164				15,421						12,595		18,695				13,440	10,601			9,923	$ 10,000
Average Annual Return, Percent	(1.67%)					7.42%			7.07%
NYSE FactSet Global Cyber Security Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	NYSE® FactSet® Global Cyber Security Index
Account Value	$ 19,164	19,164	19,164	19,164	19,164	$ 19,164	$ 19,164	19,164	$ 19,164	19,164	19,164	19,164	19,164	19,164	19,164	19,164	19,164	19,164				16,351						15,128		17,938				13,677	10,666
Average Annual Return, Percent	17.21%					12.43%	13.50%
MSCI World ex USA Enhanced Value Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI World ex USA Enhanced Value Index
Account Value	$ 15,636	15,636	15,636	15,636	15,636	$ 15,636	$ 15,636	15,636	15,636	15,636	15,636	15,636	$ 15,636	15,636	15,636	15,636	15,636	15,636				13,783						11,288		12,317				8,917	10,294			11,303		10,612		8,749		10,073		10,000
Average Annual Return, Percent	13.44%					8.72%							5.02%
MSCI World ex USA Investable Market Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI World ex USA Investable Market Index
Account Value	$ 16,029	16,029	16,029	16,029	16,029	$ 16,029	16,029	16,029	16,029	$ 16,029	16,029	16,029	$ 16,029	16,029	16,029	16,029	16,029	16,029				14,465						12,653		14,729				11,145	11,297			11,651		10,907	$ 10,000
Average Annual Return, Percent	10.82%					7.25%				6.62%
STOXX International Small Cap Equity Factor Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	STOXX International Small-Cap Equity Factor Index
Account Value	$ 17,845	17,845	17,845	17,845	17,845	$ 17,845	17,845	17,845	17,845	$ 17,845	17,845	17,845	17,845	$ 17,845	17,845	17,845	17,845	17,845				16,345						15,197		17,656				13,035	12,825			13,785		12,413		10,402		10,109			10,000
Average Annual Return, Percent	9.18%					6.83%								6.46%
MSCI ACWI ex USA 100 Hedged to USD Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI ACWI ex USA 100% Hedged to USD Index
Account Value	$ 19,671	19,671	19,671	19,671	19,671	$ 19,671	19,671	19,671	19,671	19,671	19,671	$ 19,671	19,671	$ 19,671	19,671	19,671	19,671	19,671				17,038						14,912		15,787				12,476	12,467			12,242		11,202		9,465		10,129	$ 10,000
Average Annual Return, Percent	15.45%					9.55%						7.73%
MSCI Europe IMI [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI Europe IMI
Account Value	$ 16,065	16,065	16,065	16,065	16,065	$ 16,065	16,065	16,065	16,065	16,065	16,065	$ 16,065	16,065	16,065	16,065	16,065	16,065	$ 16,065				14,513						12,271		14,692				10,938	11,019			11,508		10,846		9,012		9,971							10,000
Average Annual Return, Percent	10.70%					7.83%												4.86%
STOXX International Equity Factor Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	STOXX International Equity Factor Index
Account Value	$ 16,053	16,053	16,053	16,053	16,053	$ 16,053	16,053	16,053	16,053	16,053	16,053	16,053	16,053	$ 16,053	16,053	16,053	16,053	$ 16,053				14,254						12,306		14,336				11,047	11,483			12,248		11,325		9,514		9,950			10,000
Average Annual Return, Percent	12.62%					6.93%								5.25%
S And P Developed ex US Broad Market Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	S&P Developed ex US Broad Market Index
Account Value	$ 10,199	10,199	10,199	10,199	10,199	$ 10,199	10,199	10,199	10,199	10,199	10,199	10,199	10,199	$ 10,199	10,199	10,199	10,199	10,199				9,673						10,706		12,981				9,918	11,399			11,145		10,487		10,023		9,423			10,000
Average Annual Return, Percent	5.43%					(2.20%)								0.21%
MSCI China A Inclusion Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI China A Inclusion Index
Account Value	$ 11,962	11,962	11,962	11,962	11,962	$ 11,962	11,962	11,962	11,962	11,962	$ 11,962	11,962	11,962	$ 11,962	11,962	11,962	11,962	11,962				13,873						15,292		17,765				15,337	11,898			10,808		12,111		10,549	$ 10,000
Average Annual Return, Percent	(13.77%)					0.11%					2.23%
MSCI ACWI Low Carbon Target Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI ACWI Low Carbon Target Index
Account Value	$ 23,038	23,038	23,038	23,038	23,038	$ 23,038	23,038	23,038	23,038	23,038	$ 23,038	23,038	23,038	23,038	23,038	23,038	$ 23,038	23,038				19,577						17,413		19,583				14,716	13,626			13,176		11,983		10,238		10,308						$ 10,000
Average Annual Return, Percent	17.68%					11.07%											9.04%
NYSE FactSet Global Neuro Biopharma and MedTech Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	NYSE® FactSet® Global Neuro Biopharma and MedTech Index
Account Value	$ 10,207	10,207	$ 10,207	10,207	10,207	$ 10,207	10,207	10,207	10,207	10,207	10,207	10,207	10,207	10,207	10,207	10,207	$ 10,207	10,207	9,342	10,131	7,683	9,771	9,794		10,647	$ 9,994	$ 10,000
Average Annual Return, Percent	4.46%		1.06%
S And P Global Broad Market Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	S&P Global Broad Market Index
Account Value	$ 21,125	21,125	$ 21,125	21,125	21,125	$ 21,125	21,125	21,125	21,125	21,125	21,125	21,125	21,125	$ 21,125	21,125	21,125	21,125	21,125				18,180						16,179		18,283				13,583	12,825			12,589		11,336		9,678		9,693			$ 10,000
Average Annual Return, Percent	16.20%					10.50%								8.42%
MSCI ACWI ex USA IMI [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI ACWI ex USA IMI
Account Value	$ 15,227	15,227	15,227	15,227	15,227	$ 15,227	15,227	15,227	15,227	15,227	15,227	15,227	15,227	$ 15,227	15,227	15,227	15,227	$ 15,227				13,871						12,280		14,577				11,253	11,172			11,514		10,844		9,123		9,562							10,000
Average Annual Return, Percent	9.78%					6.39%												4.29%
MSCI World ex USA Sector Neutral Quality Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI World ex USA Sector Neutral Quality Index
Account Value	$ 19,849	19,849	19,849	19,849	19,849	$ 19,849	19,849	19,849	19,849	19,849	19,849	19,849	19,849	19,849	19,849	$ 19,849	19,849	$ 19,849				17,841						15,589		18,157				13,765	13,229			12,829		11,865		10,430		10,757					$ 10,000
Average Annual Return, Percent	11.26%					8.45%										7.44%
FTSE Emerging All Cap Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	FTSE Emerging All Cap Index
Account Value	$ 14,250	14,250	14,250	14,250	14,250	$ 14,250	14,250	14,250	14,250	14,250	14,250	14,250	14,250	14,250	14,250	$ 14,250	14,250	$ 14,250				13,177						12,114		14,489				12,020	11,364			11,374		10,815		8,915		8,942							10,000
Average Annual Return, Percent	8.14%					4.63%												3.61%
MSCI World ex USA Low Size Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI World ex USA Low Size Index
Account Value	$ 15,188	15,188	15,188	15,188	15,188	$ 15,188	15,188	15,188	15,188	15,188	15,188	15,188	$ 15,188	15,188	15,188	15,188	15,188	$ 15,188				14,171						12,618		14,867				11,249	11,766			12,165		11,472		9,920		9,967		$ 10,000
Average Annual Return, Percent	7.18%					5.24%							4.69%
MSCI EAFE Minimum Volatility USD Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE Minimum Volatility (USD) Index
Account Value	$ 15,101	15,101	15,101	15,101	15,101	$ 15,101	15,101	15,101	15,101	15,101	15,101	15,101	$ 15,101	15,101	15,101	15,101	15,101	$ 15,101				13,742						12,732		14,645				12,462	12,915			12,697		11,935		11,037		10,689							10,000
Average Annual Return, Percent	9.89%					3.18%												4.21%
Morningstar Global Emerging Green Technologies Select IndexSM [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Morningstar® Global Emerging Green Technologies Select Index℠
Account Value	$ 8,782	$ 8,782	8,782	8,782	8,782	$ 8,782	8,782	8,782	8,782	8,782	8,782	8,782	8,782	8,782	8,782	8,782	8,782	$ 8,782	$ 8,808	8,363	8,018	10,918	$ 9,817	$ 10,000
Average Annual Return, Percent	(19.56%)	(9.23%)
MSCI Kokusai Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI Kokusai Index
Account Value	$ 25,488	$ 25,488	25,488	25,488	25,488	$ 25,488	25,488	25,488	25,488	25,488	25,488	25,488	25,488	25,488	25,488	25,488	25,488	$ 25,488				21,514						18,976		20,810				15,322	14,223			13,626		12,147		10,445		10,462							10,000
Average Annual Return, Percent	18.47%					12.38%												9.81%
Morningstar Global Digital Infrastructure And Connectivity Index SM [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	Morningstar® Global Digital Infrastructure& Connectivity Index℠
Account Value	$ 12,577	12,577	12,577	$ 12,577	12,577	$ 12,577	12,577	12,577	12,577	12,577	12,577	12,577	12,577	12,577	12,577	12,577	12,577	$ 12,577		11,304		10,375			9,407			8,999	10,975	10,422	$ 10,000
Average Annual Return, Percent	21.23%			7.56%
MSCI AC Asia ex Japan Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI AC Asia ex Japan Index
Account Value	$ 14,484	14,484	14,484	$ 14,484	14,484	$ 14,484	14,484	14,484	14,484	14,484	14,484	14,484	14,484	14,484	14,484	14,484	14,484	$ 14,484				13,634						12,839		16,035				13,468	11,992			12,368		11,757		9,233		9,371							10,000
Average Annual Return, Percent	6.24%					3.85%												3.77%
MSCI EAFE IMI Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE IMI Index
Account Value	$ 16,083	16,083	16,083	16,083	16,083	$ 16,083	16,083	16,083	16,083	16,083	16,083	16,083	16,083	16,083	16,083	16,083	16,083	$ 16,083				14,499						12,556		14,818				11,267	11,424			11,819		11,066		9,368		10,007							10,000
Average Annual Return, Percent	10.92%					7.08%												4.87%
MSCI EAFE 100 Hedged to USD Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	MSCI EAFE® 100% Hedged to USD Index
Account Value	$ 24,135	24,135	24,135	24,135	24,135	$ 24,135	24,135	24,135	24,135	24,135	24,135	24,135	24,135	24,135	24,135	24,135	24,135	$ 24,135			$ 20,559							17,513		17,650				$ 13,476	$ 14,150			$ 13,759		$ 12,495		$ 10,523		$ 11,531							$ 10,000
Average Annual Return, Percent	17.40%					11.27%												9.21%
NYSE FactSet Global Virtual Work and Life Index [Member]
Account Value [Line Items]
Line Graph and Table Measure Name	NYSE® FactSet® Global Virtual Work and Life Index
Account Value	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368	$ 6,368		$ 6,123		$ 6,666			$ 6,153			$ 5,862	$ 7,941	$ 11,244		$ 12,437	$ 10,000
Average Annual Return, Percent	(4.48%)				(11.10%)

Shareholder Report, Holdings (D

Shareholder Report, Holdings (Details)	Jul. 31, 2024
C000012200 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	8%	[1],[2]
C000012200 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.20%	[1]
C000012200 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	18.60%	[1]
C000012200 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.60%	[1]
C000012200 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.40%	[1]
C000012200 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	15.50%	[1]
C000012200 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.80%	[1]
C000012200 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	21.40%	[1]
C000012200 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	16%	[1]
C000012200 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.30%	[1]
C000012200 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	10.60%	[1]
C000012200 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.60%	[1]
C000012200 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	7.80%	[1]
C000012200 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	9.60%	[1]
C000012200 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	7.20%	[1]
C000012200 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	6.80%	[1]
C000012200 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	12.20%	[1]
C000012200 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	12.40%	[1]
C000012200 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	1.70%	[1]
C000012200 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	23.40%	[1]
C000012200 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	6.90%	[1]
C000012200 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	4%	[1]
C000153270 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	14.40%	[3],[4]
C000153270 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.80%	[3]
C000153270 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.90%	[3]
C000153270 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.50%	[3]
C000153270 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.50%	[3]
C000153270 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.50%	[3]
C000153270 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7%	[3]
C000153270 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.40%	[3]
C000153270 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	27%	[3]
C000153270 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.70%	[3]
C000153270 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	15.50%	[3]
C000153270 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[3]
C000153270 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	1.90%	[3]
C000153270 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	2.20%	[3]
C000153270 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	3.10%	[3]
C000153270 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	6.80%	[3]
C000153270 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	60.30%	[3]
C000153270 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	1.90%	[3]
C000153270 [Member] | INDIA
Holdings [Line Items]
Percent of Total Investments	1.70%	[3]
C000153270 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	2.80%	[3]
C000153270 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	2.50%	[3]
C000153270 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	2.40%	[3]
C000052896 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	13.90%	[5],[6]
C000052896 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%	[5]
C000052896 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6%	[5]
C000052896 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.70%	[5]
C000052896 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.70%	[5]
C000052896 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.60%	[5]
C000052896 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.40%	[5]
C000052896 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	23.30%	[5]
C000052896 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.40%	[5]
C000052896 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.20%	[5]
C000052896 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	12.80%	[5]
C000052896 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.60%	[5]
C000052896 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	8.90%	[5]
C000052896 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	4.40%	[5]
C000052896 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	3.90%	[5]
C000052896 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	3.50%	[5]
C000052896 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	15.70%	[5]
C000052896 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	3.30%	[5]
C000052896 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	35.40%	[5]
C000052896 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	5.80%	[5]
C000052896 [Member] | ISRAEL
Holdings [Line Items]
Percent of Total Investments	2.70%	[5]
C000052896 [Member] | NORWAY
Holdings [Line Items]
Percent of Total Investments	2.50%	[5]
C000061364 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	11.20%	[7],[8]
C000061364 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.40%	[7]
C000061364 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11%	[7]
C000061364 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.10%	[7]
C000061364 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.60%	[7]
C000061364 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.30%	[7]
C000061364 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.30%	[7]
C000061364 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.60%	[7]
C000061364 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	25%	[7]
C000061364 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4%	[7]
C000061364 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	16.10%	[7]
C000061364 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.60%	[7]
C000061364 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	2.20%	[7]
C000061364 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	2%	[7]
C000061364 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	2.50%	[7]
C000061364 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	3.40%	[7]
C000061364 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	5.30%	[7]
C000061364 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	64.30%	[7]
C000061364 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	1.90%	[7]
C000061364 [Member] | INDIA
Holdings [Line Items]
Percent of Total Investments	2%	[7]
C000061364 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	2.50%	[7]
C000061364 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	2.70%	[7]
C000099140 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	14.60%	[9],[10]
C000099140 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.50%	[9]
C000099140 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	16.70%	[9]
C000099140 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.10%	[9]
C000099140 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.20%	[9]
C000099140 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.70%	[9]
C000099140 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.20%	[9]
C000099140 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	15.50%	[9]
C000099140 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.90%	[9]
C000099140 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2%	[9]
C000099140 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	19.20%	[9]
C000099140 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7%	[9]
C000099140 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	3.40%	[9]
C000099140 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	13.70%	[9]
C000099140 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	5.40%	[9]
C000099140 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	7.20%	[9]
C000099140 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	9.70%	[9]
C000099140 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	28.30%	[9]
C000099140 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	4.10%	[9]
C000099140 [Member] | HONG KONG
Holdings [Line Items]
Percent of Total Investments	5.60%	[9]
C000099140 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	3.90%	[9]
C000099140 [Member] | SINGAPORE
Holdings [Line Items]
Percent of Total Investments	4.10%	[9]
C000119716 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	26.80%	[11],[12]
C000119716 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.20%	[11]
C000119716 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.30%	[11]
C000119716 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.80%	[11]
C000119716 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5%	[11]
C000119716 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11%	[11]
C000119716 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.20%	[11]
C000119716 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	14.90%	[11]
C000119716 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.20%	[11]
C000119716 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.60%	[11]
C000119716 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	20.60%	[11]
C000119716 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[11]
C000119716 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	4.90%	[11]
C000119716 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	5.80%	[11]
C000119716 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	5%	[11]
C000119716 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	6.40%	[11]
C000119716 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	9.70%	[11]
C000119716 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	15.90%	[11]
C000119716 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	5.50%	[11]
C000119716 [Member] | INDIA
Holdings [Line Items]
Percent of Total Investments	6.20%	[11]
C000119716 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	6.30%	[11]
C000119716 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	7.50%	[11]
C000140338 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.70%	[13]
C000140338 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.50%	[13]
C000140338 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.80%	[13]
C000140338 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.50%	[13]
C000140338 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	14%	[13]
C000140338 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.30%	[13]
C000140338 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	19%	[13]
C000140338 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.50%	[13]
C000140338 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.10%	[13]
C000140338 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	20.60%	[13]
C000140338 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2%	[13]
C000140338 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	21.20%	[13]
C000140338 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	69.20%	[13]
C000140338 [Member] | HONG KONG
Holdings [Line Items]
Percent of Total Investments	4.70%	[13]
C000140338 [Member] | SINGAPORE
Holdings [Line Items]
Percent of Total Investments	4.20%	[13]
C000140338 [Member] | NEW ZEALAND
Holdings [Line Items]
Percent of Total Investments	0.70%	[13]
C000149148 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	11.20%	[14],[15]
C000149148 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.60%	[14]
C000149148 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.20%	[14]
C000149148 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.90%	[14]
C000149148 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.80%	[14]
C000149148 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.30%	[14]
C000149148 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.20%	[14]
C000149148 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	16.90%	[14]
C000149148 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.80%	[14]
C000149148 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.20%	[14]
C000149148 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	21.80%	[14]
C000149148 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%	[14]
C000149148 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	5.80%	[14]
C000149148 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	15.20%	[14]
C000149148 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	5.40%	[14]
C000149148 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	4.70%	[14]
C000149148 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	8.50%	[14]
C000149148 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	17.20%	[14]
C000149148 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	13%	[14]
C000149148 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	7.40%	[14]
C000149148 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	4.60%	[14]
C000149148 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	7%	[14]
C000012081 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	9.90%	[16],[17]
C000012081 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4%	[16]
C000012081 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.70%	[16]
C000012081 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.10%	[16]
C000012081 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.10%	[16]
C000012081 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11.10%	[16]
C000012081 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.60%	[16]
C000012081 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.10%	[16]
C000012081 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.10%	[16]
C000012081 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.60%	[16]
C000012081 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	20.40%	[16]
C000012081 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[16]
C000012081 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	7.40%	[16]
C000012081 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	9.90%	[16]
C000012081 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	8.60%	[16]
C000012081 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	3.70%	[16]
C000012081 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	11.20%	[16]
C000012081 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	15.10%	[16]
C000012081 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	2.70%	[16]
C000012081 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	23.30%	[16]
C000012081 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	5%	[16]
C000012081 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	3.20%	[16]
C000012201 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	8.80%	[18],[19]
C000012201 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.90%	[18]
C000012201 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.80%	[18]
C000012201 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.50%	[18]
C000012201 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.80%	[18]
C000012201 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.70%	[18]
C000012201 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.30%	[18]
C000012201 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.80%	[18]
C000012201 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[18]
C000012201 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.90%	[18]
C000012201 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	30.20%	[18]
C000012201 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.90%	[18]
C000012201 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	7.10%	[18]
C000012201 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	10.20%	[18]
C000012201 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	10%	[18]
C000012201 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	10.10%	[18]
C000012201 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	17.80%	[18]
C000012201 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	3.70%	[18]
C000012201 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	23.10%	[18]
C000012201 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	3.20%	[18]
C000012201 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	2.30%	[18]
C000012201 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	3.70%	[18]
C000012094 [Member] | Alibaba Group Holding Ltd [Member]
Holdings [Line Items]
Percent of Total Investments	9.90%	[20]
C000012094 [Member] | Tencent Holdings Ltd [Member]
Holdings [Line Items]
Percent of Total Investments	8.90%	[20]
C000012094 [Member] | Meituan Class B [Member]
Holdings [Line Items]
Percent of Total Investments	8.20%	[20]
C000012094 [Member] | China Construction Bank Corp Class H [Member]
Holdings [Line Items]
Percent of Total Investments	7.30%	[20]
C000012094 [Member] | Industrial And Commercial Bank of China Ltd Class H [Member]
Holdings [Line Items]
Percent of Total Investments	4.90%	[20]
C000012094 [Member] | Bank of China Ltd Class H [Member]
Holdings [Line Items]
Percent of Total Investments	4.40%	[20]
C000012094 [Member] | NetEase Inc [Member]
Holdings [Line Items]
Percent of Total Investments	4.10%	[20]
C000012094 [Member] | Xiaomi Corp Class B [Member]
Holdings [Line Items]
Percent of Total Investments	3.90%	[20]
C000012094 [Member] | JD com Inc [Member]
Holdings [Line Items]
Percent of Total Investments	3.80%	[20]
C000012094 [Member] | BYD Co Ltd Class H [Member]
Holdings [Line Items]
Percent of Total Investments	3.70%	[20]
C000012094 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.80%	[20]
C000012094 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.20%	[20]
C000012094 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%	[20]
C000012094 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	18.10%	[20]
C000012094 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	32.70%	[20]
C000012094 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.80%	[20]
C000012094 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%	[20]
C000012094 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.90%	[20]
C000012094 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.90%	[20]
C000012094 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	30.40%	[20]
C000012094 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.60%	[20]
C000050168 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	8.40%	[21],[22]
C000050168 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.40%	[21]
C000050168 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.30%	[21]
C000050168 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.20%	[21]
C000050168 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.70%	[21]
C000050168 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.40%	[21]
C000050168 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.30%	[21]
C000050168 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	24.60%	[21]
C000050168 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.20%	[21]
C000050168 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.10%	[21]
C000050168 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	16.10%	[21]
C000050168 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.70%	[21]
C000050168 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	9%	[21]
C000050168 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	7.90%	[21]
C000050168 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	4.90%	[21]
C000050168 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	7.20%	[21]
C000050168 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	32.40%	[21]
C000050168 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	6.80%	[21]
C000050168 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	2.80%	[21]
C000050168 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	11.90%	[21]
C000050168 [Member] | NORWAY
Holdings [Line Items]
Percent of Total Investments	5.10%	[21]
C000050168 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	3.60%	[21]
C000156613 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	16.80%	[23],[24]
C000156613 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.50%	[23]
C000156613 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.60%	[23]
C000156613 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.70%	[23]
C000156613 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.80%	[23]
C000156613 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.50%	[23]
C000156613 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.80%	[23]
C000156613 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	19.90%	[23]
C000156613 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.90%	[23]
C000156613 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.30%	[23]
C000156613 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	17.70%	[23]
C000156613 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.30%	[23]
C000156613 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	7.30%	[23]
C000156613 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	5.10%	[23]
C000156613 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	6.30%	[23]
C000156613 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	6.80%	[23]
C000156613 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	9.70%	[23]
C000156613 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	26.30%	[23]
C000156613 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	3.10%	[23]
C000156613 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	4.80%	[23]
C000156613 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	10.80%	[23]
C000156613 [Member] | HONG KONG
Holdings [Line Items]
Percent of Total Investments	3%	[23]
C000157306 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%	[25],[26]
C000157306 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6%	[25],[26]
C000157306 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.70%	[25],[26]
C000157306 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.70%	[25],[26]
C000157306 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.60%	[25],[26]
C000157306 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.40%	[25],[26]
C000157306 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	23.30%	[25],[26]
C000157306 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.40%	[25],[26]
C000157306 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.20%	[25],[26]
C000157306 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	12.80%	[25],[26]
C000157306 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.60%	[25],[26]
C000157306 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.20%
C000157306 [Member] | Forward foreign currency exchange contracts net cumulative depreciation [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.40%)
C000157306 [Member] | Other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	2.20%
C000157306 [Member] | Short-Term Investments [Member]
Holdings [Line Items]
Percent of Net Asset Value		[27]
C000205801 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	1.50%	[28],[29]
C000205801 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	63.40%	[28]
C000205801 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	21.20%	[28]
C000205801 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.60%	[28]
C000205801 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.80%	[28]
C000205801 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	3.30%	[28]
C000205801 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	4.10%	[28]
C000205801 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	8.20%	[28]
C000205801 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	8%	[28]
C000205801 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	6.80%	[28]
C000205801 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	2.70%	[28]
C000205801 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	33.70%	[28]
C000205801 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	1.20%	[28]
C000205801 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	10%	[28]
C000205801 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	20.50%	[28]
C000065072 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.90%	[30]
C000065072 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.50%	[30]
C000065072 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[30]
C000065072 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.30%	[30]
C000065072 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.10%	[30]
C000065072 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.20%	[30]
C000065072 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.70%	[30]
C000065072 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	28.10%	[30]
C000065072 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.60%	[30]
C000065072 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	20.40%	[30]
C000065072 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3%	[30]
C000065072 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	21.50%	[30]
C000065072 [Member] | INDIA
Holdings [Line Items]
Percent of Total Investments	22.90%	[30]
C000065072 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	14%	[30]
C000065072 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	27.90%	[30]
C000065072 [Member] | HONG KONG
Holdings [Line Items]
Percent of Total Investments	4.50%	[30]
C000065072 [Member] | SINGAPORE
Holdings [Line Items]
Percent of Total Investments	3.50%	[30]
C000065072 [Member] | INDONESIA
Holdings [Line Items]
Percent of Total Investments	1.90%	[30]
C000065072 [Member] | MALAYSIA
Holdings [Line Items]
Percent of Total Investments	1.60%	[30]
C000065072 [Member] | PHILIPPINES
Holdings [Line Items]
Percent of Total Investments	0.60%	[30]
C000065072 [Member] | THAILAND
Holdings [Line Items]
Percent of Total Investments	1.60%	[30]
C000119715 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	10.60%	[31],[32]
C000119715 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.90%	[31]
C000119715 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.60%	[31]
C000119715 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%	[31]
C000119715 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.10%	[31]
C000119715 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11.30%	[31]
C000119715 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.30%	[31]
C000119715 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.90%	[31]
C000119715 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.20%	[31]
C000119715 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.90%	[31]
C000119715 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	19.30%	[31]
C000119715 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[31]
C000119715 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	7.70%	[31]
C000119715 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	9.10%	[31]
C000119715 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	7.90%	[31]
C000119715 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	3.60%	[31]
C000119715 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	10.10%	[31]
C000119715 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	15.20%	[31]
C000119715 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	2.80%	[31]
C000119715 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	25%	[31]
C000119715 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	4.50%	[31]
C000119715 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	3.50%	[31]
C000140337 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	4.30%	[33],[34]
C000140337 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.20%	[33]
C000140337 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	15.60%	[33]
C000140337 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.70%	[33]
C000140337 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%	[33]
C000140337 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.90%	[33]
C000140337 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.10%	[33]
C000140337 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.50%	[33]
C000140337 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.90%	[33]
C000140337 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.40%	[33]
C000140337 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	18.60%	[33]
C000140337 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.80%	[33]
C000140337 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	14.50%	[33]
C000140337 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	12.60%	[33]
C000140337 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	5.60%	[33]
C000140337 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	16%	[33]
C000140337 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	24.10%	[33]
C000140337 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	4.40%	[33]
C000140337 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	7.20%	[33]
C000140337 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	5.60%	[33]
C000140337 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	4%	[33]
C000140337 [Member] | BELGIUM
Holdings [Line Items]
Percent of Total Investments	1.70%	[33]
C000212225 [Member] | Biotechnology [Member]
Holdings [Line Items]
Percent of Total Investments	74.60%	[35]
C000212225 [Member] | Pharmaceuticals [Member]
Holdings [Line Items]
Percent of Total Investments	23.60%	[35]
C000212225 [Member] | Life Sciences Tools And Services [Member]
Holdings [Line Items]
Percent of Total Investments	1.20%	[35]
C000212225 [Member] | Chemicals Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.60%	[35]
C000212225 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	4.70%	[35]
C000212225 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	3.40%	[35]
C000212225 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	4%	[35]
C000212225 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	4.50%	[35]
C000212225 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	3.70%	[35]
C000212225 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	5.50%	[35]
C000212225 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	0.80%	[35]
C000212225 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	67.50%	[35]
C000212225 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	1.10%	[35]
C000212225 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	4.10%	[35]
C000212225 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	0.70%	[35]
C000240517 [Member] | Chemicals Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.40%	[36]
C000240517 [Member] | Semiconductors And Semiconductor Equipment [Member]
Holdings [Line Items]
Percent of Total Investments	23.60%	[36]
C000240517 [Member] | Machinery [Member]
Holdings [Line Items]
Percent of Total Investments	18.80%	[36]
C000240517 [Member] | Electrical Equipment [Member]
Holdings [Line Items]
Percent of Total Investments	17.70%	[36]
C000240517 [Member] | Automobile Components [Member]
Holdings [Line Items]
Percent of Total Investments	6.30%	[36]
C000240517 [Member] | Electronic Equipment Instruments And Components [Member]
Holdings [Line Items]
Percent of Total Investments	5.30%	[36]
C000240517 [Member] | Leisure Products [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%	[36]
C000240517 [Member] | Commercial Services And Supplies [Member]
Holdings [Line Items]
Percent of Total Investments	0.50%	[36]
C000240517 [Member] | Automobiles Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.60%	[36]
C000240517 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	4.60%	[36]
C000240517 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	2.80%	[36]
C000240517 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	5%	[36]
C000240517 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	13.10%	[36]
C000240517 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	29.90%	[36]
C000240517 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	11%	[36]
C000240517 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	7.50%	[36]
C000240517 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	19.40%	[36]
C000240517 [Member] | BELGIUM
Holdings [Line Items]
Percent of Total Investments	3.50%	[36]
C000240517 [Member] | FINLAND
Holdings [Line Items]
Percent of Total Investments	3.20%	[36]
C000133231 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4%	[37],[38]
C000133231 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.70%	[37],[38]
C000133231 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.10%	[37],[38]
C000133231 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.10%	[37],[38]
C000133231 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11.10%	[37],[38]
C000133231 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.60%	[37],[38]
C000133231 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.10%	[37],[38]
C000133231 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.10%	[37],[38]
C000133231 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.60%	[37],[38]
C000133231 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	20.40%	[37],[38]
C000133231 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[37],[38]
C000133231 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000133231 [Member] | Forward foreign currency exchange contracts net cumulative depreciation [Member]
Holdings [Line Items]
Percent of Net Asset Value	(2.00%)
C000133231 [Member] | Other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(19.90%)
C000133231 [Member] | Short-Term Investments [Member]
Holdings [Line Items]
Percent of Net Asset Value	21.80%
C000148919 [Member] | Kweichow Moutai Co Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	5%
C000148919 [Member] | Contemporary Amperex Technology Co Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	2.30%	[39]
C000148919 [Member] | China Yangtze Power Co Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	2.10%	[39]
C000148919 [Member] | China Merchants Bank Co Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.90%	[39]
C000148919 [Member] | Wuliangye Yibin Co Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.40%	[39]
C000148919 [Member] | Ping An Insurance Group Co of China Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.30%	[39]
C000148919 [Member] | BYD Co Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.30%	[39]
C000148919 [Member] | Agricultural Bank of China Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1.10%	[39]
C000148919 [Member] | Industrial And Commercial Bank of China Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1%	[39]
C000148919 [Member] | Industrial Bank Co Ltd Class A [Member]
Holdings [Line Items]
Percent of Total Investments	1%	[39]
C000148919 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4%	[39]
C000148919 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7%	[39]
C000148919 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.10%	[39]
C000148919 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.50%	[39]
C000148919 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.20%	[39]
C000148919 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.20%	[39]
C000148919 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	15.40%	[39]
C000148919 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	14.90%	[39]
C000148919 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.90%	[39]
C000148919 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	20.50%	[39]
C000148919 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.30%	[39]
C000149539 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	11.80%	[40],[41]
C000149539 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3%	[40]
C000149539 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11.30%	[40]
C000149539 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.90%	[40]
C000149539 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.60%	[40]
C000149539 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.70%	[40]
C000149539 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.90%	[40]
C000149539 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.30%	[40]
C000149539 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	25.20%	[40]
C000149539 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.60%	[40]
C000149539 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	18%	[40]
C000149539 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.50%	[40]
C000149539 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	1.60%	[40]
C000149539 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	2%	[40]
C000149539 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	2.20%	[40]
C000149539 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	3.10%	[40]
C000149539 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	5.50%	[40]
C000149539 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	63.60%	[40]
C000149539 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	2%	[40]
C000149539 [Member] | INDIA
Holdings [Line Items]
Percent of Total Investments	2%	[40]
C000149539 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	2.90%	[40]
C000149539 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	3.30%	[40]
C000149147 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	7.30%	[42],[43]
C000149147 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.70%	[42]
C000149147 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.20%	[42]
C000149147 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.30%	[42]
C000149147 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.60%	[42]
C000149147 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11.50%	[42]
C000149147 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.60%	[42]
C000149147 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	26.80%	[42]
C000149147 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	14.80%	[42]
C000149147 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.90%	[42]
C000149147 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	24%	[42]
C000149147 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.60%	[42]
C000149147 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	3.60%	[42]
C000149147 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	4.50%	[42]
C000149147 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	7%	[42]
C000149147 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	5.20%	[42]
C000149147 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	8.20%	[42]
C000149147 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	6.20%	[42]
C000149147 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	3.60%	[42]
C000149147 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	42.80%	[42]
C000149147 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	6.30%	[42]
C000149147 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	5.30%	[42]
C000152570 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	11.50%	[44],[45]
C000152570 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	16.80%	[44]
C000152570 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.90%	[44]
C000152570 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.40%	[44]
C000152570 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4%	[44]
C000152570 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	0.30%	[44]
C000152570 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.70%	[44]
C000152570 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	58.10%	[44]
C000152570 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%	[44]
C000152570 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	5.80%	[44]
C000152570 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.20%	[44]
C000152570 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	3.10%	[44]
C000152570 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	2.40%	[44]
C000152570 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	2.40%	[44]
C000152570 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	6.20%	[44]
C000152570 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	2.30%	[44]
C000152570 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	59.80%	[44]
C000152570 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	3.40%	[44]
C000152570 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	1.60%	[44]
C000152570 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	5%	[44]
C000152570 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	2.30%	[44]
C000061363 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	26.20%	[46],[47]
C000061363 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.40%	[46]
C000061363 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.70%	[46]
C000061363 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%	[46]
C000061363 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.20%	[46]
C000061363 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.90%	[46]
C000061363 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.40%	[46]
C000061363 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.80%	[46]
C000061363 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.50%	[46]
C000061363 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7%	[46]
C000061363 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	22.10%	[46]
C000061363 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[46]
C000061363 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	4.80%	[46]
C000061363 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	6.30%	[46]
C000061363 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	5.50%	[46]
C000061363 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	7.10%	[46]
C000061363 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	9.70%	[46]
C000061363 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	14.90%	[46]
C000061363 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	5.30%	[46]
C000061363 [Member] | INDIA
Holdings [Line Items]
Percent of Total Investments	5.70%	[46]
C000061363 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	6.90%	[46]
C000061363 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	7.60%	[46]
C000082529 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	4.20%	[48],[49]
C000082529 [Member] | Banks [Member]
Holdings [Line Items]
Percent of Total Investments	48.90%	[48]
C000082529 [Member] | Capital Markets [Member]
Holdings [Line Items]
Percent of Total Investments	16.20%	[48]
C000082529 [Member] | Financial Services Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.60%	[48]
C000082529 [Member] | Insurance Sector [Member]
Holdings [Line Items]
Percent of Total Investments	28.30%	[48]
C000082529 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	14.30%	[48]
C000082529 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	13.50%	[48]
C000082529 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	9.40%	[48]
C000082529 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	24.30%	[48]
C000082529 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	8.90%	[48]
C000082529 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	6.40%	[48]
C000082529 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	6.30%	[48]
C000082529 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	8.20%	[48]
C000082529 [Member] | BELGIUM
Holdings [Line Items]
Percent of Total Investments	1.80%	[48]
C000082529 [Member] | FINLAND
Holdings [Line Items]
Percent of Total Investments	2.70%	[48]
C000201209 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	6.50%	[50],[51]
C000201209 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1%	[50]
C000201209 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	20.70%	[50]
C000201209 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.90%	[50]
C000201209 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.20%	[50]
C000201209 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	54.10%	[50]
C000201209 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	1.10%	[50]
C000201209 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	1.70%	[50]
C000201209 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	1.60%	[50]
C000201209 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	10.30%	[50]
C000201209 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	52.40%	[50]
C000201209 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	8%	[50]
C000201209 [Member] | INDIA
Holdings [Line Items]
Percent of Total Investments	1.10%	[50]
C000201209 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	2.80%	[50]
C000201209 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	12.60%	[50]
C000201209 [Member] | ISRAEL
Holdings [Line Items]
Percent of Total Investments	1.80%	[50]
C000201209 [Member] | GUERNSEY
Holdings [Line Items]
Percent of Total Investments	1.20%	[50]
C000210493 [Member] | Software [Member]
Holdings [Line Items]
Percent of Total Investments	65.40%	[52]
C000210493 [Member] | Professional Services [Member]
Holdings [Line Items]
Percent of Total Investments	13.20%	[52]
C000210493 [Member] | IT Services [Member]
Holdings [Line Items]
Percent of Total Investments	10.90%	[52]
C000210493 [Member] | Communications Equipment [Member]
Holdings [Line Items]
Percent of Total Investments	10.50%	[52]
C000210493 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	2.20%	[52]
C000210493 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	2.20%	[52]
C000210493 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	3.40%	[52]
C000210493 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	4.80%	[52]
C000210493 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	70.60%	[52]
C000210493 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	3.60%	[52]
C000210493 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	0.30%	[52]
C000210493 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	1.70%	[52]
C000210493 [Member] | ISRAEL
Holdings [Line Items]
Percent of Total Investments	9.40%	[52]
C000210493 [Member] | MALAYSIA
Holdings [Line Items]
Percent of Total Investments	1.20%	[52]
C000210493 [Member] | TURKIYE
Holdings [Line Items]
Percent of Total Investments	0.60%	[52]
C000055846 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	3.50%	[53],[54]
C000055846 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.50%	[53]
C000055846 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.20%	[53]
C000055846 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[53]
C000055846 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.50%	[53]
C000055846 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.60%	[53]
C000055846 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.40%	[53]
C000055846 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.30%	[53]
C000055846 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	25.60%	[53]
C000055846 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.70%	[53]
C000055846 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	15.40%	[53]
C000055846 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.60%	[53]
C000055846 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	2%	[53]
C000055846 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	2.60%	[53]
C000055846 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	2.30%	[53]
C000055846 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	1%	[53]
C000055846 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	3%	[53]
C000055846 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	4.10%	[53]
C000055846 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	1.30%	[53]
C000055846 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	0.90%	[53]
C000055846 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	76.10%	[53]
C000055846 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	3.20%	[53]
C000156614 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	9.10%	[55],[56]
C000156614 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.60%	[55]
C000156614 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	12.50%	[55]
C000156614 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.90%	[55]
C000156614 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.80%	[55]
C000156614 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.80%	[55]
C000156614 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.50%	[55]
C000156614 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	16.40%	[55]
C000156614 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.50%	[55]
C000156614 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.90%	[55]
C000156614 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	22%	[55]
C000156614 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.10%	[55]
C000156614 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	2%	[55]
C000156614 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	5.30%	[55]
C000156614 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	10.60%	[55]
C000156614 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	11.30%	[55]
C000156614 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	17%	[55]
C000156614 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	4.20%	[55]
C000156614 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	31.50%	[55]
C000156614 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	2.90%	[55]
C000156614 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	3%	[55]
C000156614 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	3.10%	[55]
C000179059 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	12%	[57],[58]
C000179059 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.50%	[57]
C000179059 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11.30%	[57]
C000179059 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.10%	[57]
C000179059 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.80%	[57]
C000179059 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.50%	[57]
C000179059 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.90%	[57]
C000179059 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	17.30%	[57]
C000179059 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.10%	[57]
C000179059 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.60%	[57]
C000179059 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	20.70%	[57]
C000179059 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[57]
C000179059 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	6.80%	[57]
C000179059 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	8.20%	[57]
C000179059 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	7.10%	[57]
C000179059 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	3.20%	[57]
C000179059 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	9%	[57]
C000179059 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	13.60%	[57]
C000179059 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	22.40%	[57]
C000179059 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	4%	[57]
C000179059 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	3.20%	[57]
C000179059 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	10.50%	[57]
C000154548 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	15%	[59],[60]
C000154548 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.20%	[59]
C000154548 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.60%	[59]
C000154548 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.80%	[59]
C000154548 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.80%	[59]
C000154548 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	14.50%	[59]
C000154548 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.30%	[59]
C000154548 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	19.70%	[59]
C000154548 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	11.60%	[59]
C000154548 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.10%	[59]
C000154548 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	14.10%	[59]
C000154548 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.30%	[59]
C000154548 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	7%	[59]
C000154548 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	6.30%	[59]
C000154548 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	4.80%	[59]
C000154548 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	5.10%	[59]
C000154548 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	15.60%	[59]
C000154548 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	3.30%	[59]
C000154548 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	26.20%	[59]
C000154548 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	4%	[59]
C000154548 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	9.90%	[59]
C000154548 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	2.80%	[59]
C000157303 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.40%	[61],[62]
C000157303 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.70%	[61],[62]
C000157303 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	1.80%	[61],[62]
C000157303 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	5.20%	[61],[62]
C000157303 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	10.90%	[61],[62]
C000157303 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.40%	[61],[62]
C000157303 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.80%	[61],[62]
C000157303 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13.50%	[61],[62]
C000157303 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7%	[61],[62]
C000157303 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	22.10%	[61],[62]
C000157303 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[61],[62]
C000157303 [Member] | Investment Companies [Member]
Holdings [Line Items]
Percent of Net Asset Value	100.10%
C000157303 [Member] | Forward foreign currency exchange contracts net cumulative depreciation [Member]
Holdings [Line Items]
Percent of Net Asset Value	(1.20%)
C000157303 [Member] | Other assets less liabilities [Member]
Holdings [Line Items]
Percent of Net Asset Value	(43.70%)
C000157303 [Member] | Short-Term Investments [Member]
Holdings [Line Items]
Percent of Net Asset Value	44.80%
C000246989 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	0.60%	[63],[64]
C000246989 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.70%	[63]
C000246989 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	31.70%	[63]
C000246989 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	21.40%	[63]
C000246989 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	44.20%	[63]
C000246989 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	3%	[63]
C000246989 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	6.10%	[63]
C000246989 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	9.70%	[63]
C000246989 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	27.40%	[63]
C000246989 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	26.20%	[63]
C000246989 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	2.60%	[63]
C000246989 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	18%	[63]
C000246989 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	5.60%	[63]
C000246989 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	0.30%	[63]
C000246989 [Member] | NORWAY
Holdings [Line Items]
Percent of Total Investments	0.50%	[63]
C000154547 [Member] | Other [Member]
Holdings [Line Items]
Percent of Total Investments	13.90%	[65],[66]
C000154547 [Member] | Energy Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.80%	[65]
C000154547 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	9.90%	[65]
C000154547 [Member] | Real Estate Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.40%	[65]
C000154547 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.40%	[65]
C000154547 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	13%	[65]
C000154547 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	7.90%	[65]
C000154547 [Member] | Industrial Sector [Member]
Holdings [Line Items]
Percent of Total Investments	16.30%	[65]
C000154547 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	8.80%	[65]
C000154547 [Member] | Materials Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.40%	[65]
C000154547 [Member] | Financials [Member]
Holdings [Line Items]
Percent of Total Investments	21.90%	[65]
C000154547 [Member] | Utilities Sector [Member]
Holdings [Line Items]
Percent of Total Investments	4.20%	[65]
C000154547 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	7.20%	[65]
C000154547 [Member] | SWITZERLAND
Holdings [Line Items]
Percent of Total Investments	8.10%	[65]
C000154547 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	6%	[65]
C000154547 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	3.80%	[65]
C000154547 [Member] | FRANCE
Holdings [Line Items]
Percent of Total Investments	8.70%	[65]
C000154547 [Member] | UNITED KINGDOM
Holdings [Line Items]
Percent of Total Investments	13%	[65]
C000154547 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	3.80%	[65]
C000154547 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	24.90%	[65]
C000154547 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	4.70%	[65]
C000154547 [Member] | CANADA
Holdings [Line Items]
Percent of Total Investments	5.90%	[65]
C000236410 [Member] | Biotechnology [Member]
Holdings [Line Items]
Percent of Total Investments	62.30%	[67]
C000236410 [Member] | Pharmaceuticals [Member]
Holdings [Line Items]
Percent of Total Investments	28.80%	[67]
C000236410 [Member] | Life Sciences Tools And Services [Member]
Holdings [Line Items]
Percent of Total Investments	0.30%	[67]
C000236410 [Member] | Health Care Equipment And Supplies [Member]
Holdings [Line Items]
Percent of Total Investments	8.60%	[67]
C000236410 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	2.70%	[67]
C000236410 [Member] | DENMARK
Holdings [Line Items]
Percent of Total Investments	3.20%	[67]
C000236410 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	0.30%	[67]
C000236410 [Member] | NETHERLANDS
Holdings [Line Items]
Percent of Total Investments	5%	[67]
C000236410 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	1.10%	[67]
C000236410 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	81%	[67]
C000236410 [Member] | KOREA, REPUBLIC OF
Holdings [Line Items]
Percent of Total Investments	3.60%	[67]
C000236410 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	0.30%	[67]
C000236410 [Member] | IRELAND
Holdings [Line Items]
Percent of Total Investments	2.80%	[67]
C000210492 [Member] | Chemicals Sector [Member]
Holdings [Line Items]
Percent of Total Investments	2.50%	[68]
C000210492 [Member] | Semiconductors And Semiconductor Equipment [Member]
Holdings [Line Items]
Percent of Total Investments	35%	[68]
C000210492 [Member] | Electronic Equipment Instruments And Components [Member]
Holdings [Line Items]
Percent of Total Investments	4.90%	[68]
C000210492 [Member] | Software [Member]
Holdings [Line Items]
Percent of Total Investments	9.80%	[68]
C000210492 [Member] | IT Services [Member]
Holdings [Line Items]
Percent of Total Investments	9%	[68]
C000210492 [Member] | Communications Equipment [Member]
Holdings [Line Items]
Percent of Total Investments	15.30%	[68]
C000210492 [Member] | Technology Hardware Storage And Peripherals [Member]
Holdings [Line Items]
Percent of Total Investments	11.80%	[68]
C000210492 [Member] | Specialized REITs [Member]
Holdings [Line Items]
Percent of Total Investments	6.10%	[68]
C000210492 [Member] | Diversified Telecommunication Services [Member]
Holdings [Line Items]
Percent of Total Investments	5.60%	[68]
C000210492 [Member] | AUSTRALIA
Holdings [Line Items]
Percent of Total Investments	1.30%	[68]
C000210492 [Member] | GERMANY
Holdings [Line Items]
Percent of Total Investments	1.90%	[68]
C000210492 [Member] | ITALY
Holdings [Line Items]
Percent of Total Investments	1.30%	[68]
C000210492 [Member] | JAPAN
Holdings [Line Items]
Percent of Total Investments	3.70%	[68]
C000210492 [Member] | SWEDEN
Holdings [Line Items]
Percent of Total Investments	2.60%	[68]
C000210492 [Member] | UNITED STATES
Holdings [Line Items]
Percent of Total Investments	77.30%	[68]
C000210492 [Member] | TAIWAN
Holdings [Line Items]
Percent of Total Investments	4.30%	[68]
C000210492 [Member] | CHINA
Holdings [Line Items]
Percent of Total Investments	2.30%	[68]
C000210492 [Member] | SPAIN
Holdings [Line Items]
Percent of Total Investments	1.90%	[68]
C000210492 [Member] | SINGAPORE
Holdings [Line Items]
Percent of Total Investments	0.60%	[68]
C000210492 [Member] | FINLAND
Holdings [Line Items]
Percent of Total Investments	2.80%	[68]
C000221317 [Member] | Stride Inc [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[69]
C000221317 [Member] | Zomato Ltd [Member]
Holdings [Line Items]
Percent of Total Investments	2.50%	[69]
C000221317 [Member] | Nexon Co Ltd [Member]
Holdings [Line Items]
Percent of Total Investments	2.50%	[69]
C000221317 [Member] | Braze Inc Class A [Member]
Holdings [Line Items]
Percent of Total Investments	2.40%	[69]
C000221317 [Member] | Match Group Inc [Member]
Holdings [Line Items]
Percent of Total Investments	2.30%	[69]
C000221317 [Member] | Tyler Technologies Inc [Member]
Holdings [Line Items]
Percent of Total Investments	2.30%	[69]
C000221317 [Member] | Dropbox Inc Class A [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[69]
C000221317 [Member] | Spotify Technology SA [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[69]
C000221317 [Member] | Electronic Arts Inc [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[69]
C000221317 [Member] | Cloudflare Inc Class A [Member]
Holdings [Line Items]
Percent of Total Investments	2.20%	[69]
C000221317 [Member] | Healthcare Sector [Member]
Holdings [Line Items]
Percent of Total Investments	3.20%	[69]
C000221317 [Member] | Communications Sector [Member]
Holdings [Line Items]
Percent of Total Investments	30.40%	[69]
C000221317 [Member] | Consumer Discretionary Sector [Member]
Holdings [Line Items]
Percent of Total Investments	19.20%	[69]
C000221317 [Member] | Consumer Staples Sector [Member]
Holdings [Line Items]
Percent of Total Investments	6.10%	[69]
C000221317 [Member] | Information Technology Sector [Member]
Holdings [Line Items]
Percent of Total Investments	41.10%	[69]
[1]Excludes money market funds.[2]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[3]Excludes money market funds.[4]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[5]Excludes money market funds.[6]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[7]Excludes money market funds.[8]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[9]Excludes money market funds.[10]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[11]Excludes money market funds.[12]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[13]Excludes money market funds.[14]Excludes money market funds.[15]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[16]Excludes money market funds.[17]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[18]Excludes money market funds.[19]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[20]Excludes money market funds.[21]Excludes money market funds.[22]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[23]Excludes money market funds.[24]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[25]Excludes money market funds.[26]The underlying fund is iShares MSCI EAFE Small-Cap ETF.[27]Rounds to less than 0.1%.[28]Excludes money market funds.[29]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[30]Excludes money market funds.[31]Excludes money market funds.[32]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[33]Excludes money market funds.[34]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[35]Excludes money market funds.[36]Excludes money market funds.[37]Excludes money market funds.[38]The underlying fund is iShares MSCI EAFE ETF.[39]Excludes money market funds.[40]Excludes money market funds.[41]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[42]Excludes money market funds.[43]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[44]Excludes money market funds.[45]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[46]Excludes money market funds.[47]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[48]Excludes money market funds.[49]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[50]Excludes money market funds.[51]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[52]Excludes money market funds.[53]Excludes money market funds.[54]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[55]Excludes money market funds.[56]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[57]Excludes money market funds.[58]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[59]Excludes money market funds.[60]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[61]Excludes money market funds.[62]The underlying fund is iShares MSCI ACWI ex U.S. ETF.[63]Excludes money market funds.[64]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[65]Excludes money market funds.[66]Ten largest country/geographic regions are presented. Additional country/geographic regions are found in Other.[67]Excludes money market funds.[68]Excludes money market funds.[69]Excludes money market funds.