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Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName iSHARES INC
Prospectus Date rr_ProspectusDate Dec. 30, 2014
iShares MSCI Mexico Capped ETF  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading iSHARES® MSCI MEXICO CAPPED ETF
Ticker: EWW                    Stock Exchange: NYSE Arca
Objective [Heading] rr_ObjectiveHeading Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock The iShares MSCI Mexico Capped ETF (the “Fund”) seeks to track the investment results of a broad-based index composed of Mexican equities.
Expense [Heading] rr_ExpenseHeading Fees and Expenses
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock The following table describes the fees and expenses that you will incur if you own shares of the Fund. The investment advisory agreement between iShares, Inc. (the “Company”) and BlackRock Fund Advisors (“BFA”) (formerly, Barclays Global Fund Advisors (“BGFA”)) (the “Investment Advisory Agreement”) provides that BFA will pay all operating expenses of the Fund, except interest expenses, taxes, brokerage expenses, future distribution fees or expenses, and extraordinary expenses.

You may also incur usual and customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the Example that follows:
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses
(ongoing expenses that you pay each year as a
percentage of the value of your investments)
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover.
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock The Fund may pay transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in Annual Fund Operating Expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 19% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 19.00%rr_PortfolioTurnoverRate
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Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You may also incur usual and customary brokerage commissions when buying or selling shares of the Fund, which are not reflected in the Example that follows:
Expense Example [Heading] rr_ExpenseExampleHeading Example.
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock This Example is intended to help you compare the cost of owning shares of the Fund with the cost of investing in other funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:
Strategy [Heading] rr_StrategyHeading Principal Investment Strategies
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock The Fund seeks to track the investment results of the MSCI Mexico Investable Market Index (IMI) 25/50 (the “Underlying Index”), which consists of stocks traded primarily on the Mexican Stock Exchange. The Underlying Index is a free float-adjusted market capitalization-weighted index with a capping methodology applied to issuer weights so that no single issuer of a component exceeds 25% of the Underlying Index weight, and all issuers with weight above 5% do not exceed 50% of the Underlying Index weight. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include consumer staples, financials and materials companies. The components of the Underlying Index, and the degree to which these components represent certain industries, may change over time.

BFA uses a “passive” or indexing approach to try to achieve the Fund’s investment objective. Unlike many investment companies, the Fund does not try to “beat” the index it tracks and does not seek temporary defensive positions when markets decline or appear overvalued.

Indexing may eliminate the chance that the Fund will substantially outperform the Underlying Index but also may reduce some of the risks of active management, such as poor security selection. Indexing seeks to achieve lower costs and better after-tax performance by keeping portfolio turnover low in comparison to actively managed investment companies.

BFA uses a representative sampling indexing strategy to manage the Fund. “Representative sampling” is an indexing strategy that involves investing in a representative sample of securities that collectively has an investment profile similar to that of the Underlying Index. The securities selected are expected to have, in the aggregate, investment characteristics (based on factors such as market capitalization and industry weightings), fundamental characteristics (such as return variability and yield) and liquidity measures similar to those of the Underlying Index. The Fund may or may not hold all of the securities in the Underlying Index.

The Fund will at all times invest at least 80% of its assets in the securities of its Underlying Index and in depositary receipts representing securities in its Underlying Index. The Fund may invest the remainder of its assets in other securities, including securities not in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index, and in other investments, including futures contracts, options on futures contracts, other types of options and swaps related to its Underlying Index, as well as cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates. The Fund seeks to track the investment results of the Underlying Index before the fees and expenses of the Fund.

The Fund may lend securities representing up to one-third of the value of the Fund's total assets (including the value of the collateral received).

The Underlying Index is calculated by an organization (the “Index Provider”) that is independent of the Fund and BFA. The Index Provider determines the composition and relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index. The Fund’s Index Provider is MSCI Inc. (“MSCI”).

Industry Concentration Policy. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration Industry Concentration Policy. The Fund will concentrate its investments (i.e., hold 25% or more of its total assets) in a particular industry or group of industries to approximately the same extent that the Underlying Index is concentrated. For purposes of this limitation, securities of the U.S. government (including its agencies and instrumentalities) and repurchase agreements collateralized by U.S. government securities are not considered to be issued by members of any industry.
Risk [Heading] rr_RiskHeading Summary of Principal Risks
Risk Narrative [Text Block] rr_RiskNarrativeTextBlock As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value per share (“NAV”), trading price, yield, total return and ability to meet its investment objective.

Asset Class Risk. Securities in the Underlying Index or in the Fund's portfolio may underperform in comparison to the general securities markets, a particular securities market or other asset classes.

Commodity Risk. The Fund invests in Mexico, which is susceptible to fluctuations in certain commodity markets. Any negative changes in commodity markets could have an adverse impact on the Mexican economy.

Concentration Risk. The Fund may be susceptible to an increased risk of loss, including losses due to adverse occurrences affecting the Fund more than the market as a whole, to the extent that the Fund's investments are concentrated in the securities of a particular issuer or issuers, country, group of countries, region, market, industry, group of industries, sector or asset class.

Consumer Staples Sector Risk. The consumer staples sector may be affected by marketing campaigns, changes in consumer demands, government regulations and changes in commodity prices.

Currency Risk. Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if the currency of a non-U.S. market in which the Fund invests depreciates against the U.S. dollar.

Custody Risk. Less developed markets are more likely to experience problems with the clearing and settling of trades and the holding of securities by local banks, agents and depositories.

Equity Securities Risk. Equity securities are subject to changes in value and their values may be more volatile than those of other asset classes.

Financials Sector Risk. Performance of companies in the financials sector may be adversely impacted by many factors, including, among others, government regulations, economic conditions, credit rating downgrades, changes in interest rates, and decreased liquidity in credit markets. This sector has experienced significant losses in the recent past, and the impact of more stringent capital requirements and of recent or future regulation on any individual financial company or on the sector as a whole cannot be predicted.

Geographic Risk. A natural or other disaster could occur in a geographic region in which the Fund invests, which could affect the economy or particular business operations of companies in the specific geographic region, causing an adverse impact on the Fund's investments in the affected region.

Index-Related Risk. There is no guarantee that the Fund will achieve a high degree of correlation to the Underlying Index and therefore achieve its investment objective. Market disruptions and regulatory restrictions could have an adverse effect on the Fund’s ability to adjust its exposure to the required levels in order to track the Underlying Index. Errors in the construction of the Underlying Index in accordance with its methodology may occur from time to time and may not be identified and corrected by the Index Provider for a period of time, which may have an adverse impact on the Fund and its shareholders.

Issuer Risk. Fund performance depends on the performance of individual securities to which the Fund has exposure. Changes in the financial condition or credit rating of an issuer of those securities may cause the value of the securities to decline.

Management Risk. As the Fund may not fully replicate the Underlying Index, it is subject to the risk that BFA's investment strategy may not produce the intended results.

Market Risk. The Fund could lose money over short periods due to short-term market movements and over longer periods during market downturns.

Market Trading Risk. The Fund faces numerous market trading risks, including the potential lack of an active market for Fund shares, losses from trading in secondary markets, periods of high volatility and disruption in the creation/redemption process of the Fund. ANY OF THESE FACTORS, AMONG OTHERS, MAY LEAD TO THE FUND'S SHARES TRADING AT A PREMIUM OR DISCOUNT TO NAV.

Materials Sector Risk. Companies in the materials sector may be adversely impacted by the volatility of commodity prices, exchange rates, depletion of resources, over-production, litigation and government regulations, among other factors.

Non-Diversification Risk. The Fund may invest a large percentage of its assets in securities issued by or representing a small number of issuers. As a result, the Fund's performance may depend on the performance of a small number of issuers.

Non-U.S. Securities Risk. Investments in the securities of non-U.S. issuers are subject to the risks associated with investing in those non-U.S. markets, such as heightened risks of inflation or nationalization. The Fund may lose money due to political, economic and geographic events affecting issuers of Mexican securities or Mexican markets. The Fund is specifically exposed to North American Economic Risk.

Passive Investment Risk. The Fund is not actively managed and BFA does not attempt to take defensive positions under any market conditions, including declining markets.

Privatization Risk. The country in which the Fund invests has privatized, or has begun a process of privatizing, certain entities and industries. Privatized entities may lose money or be re-nationalized.

Reliance on Trading Partners Risk. The Fund invests in a country whose economy is heavily dependent upon trading with key partners. Any reduction in this trading may have an adverse impact on the Fund's investments. Through its portfolio companies' trading partners, the Fund is specifically exposed to Central and South American Economic Risk and North American Economic Risk.

Risk of Investing in Emerging Markets. The Fund's investments in emerging market issuers may be subject to a greater risk of loss than investments in issuers located or operating in more developed markets. Emerging markets may be more likely to experience inflation, political turmoil and rapid changes in economic conditions than more developed markets. Emerging markets often have less uniformity in accounting and reporting requirements, less reliable securities valuation and greater risk associated with custody of securities than developed markets.

Risk of Investing in Mexico. Investments in Mexican issuers involve risks that are specific to Mexico, including legal, regulatory, political, currency, security and economic risks. In the past, Mexico has experienced high interest rates, economic volatility and high unemployment rates.

Securities Lending Risk. The Fund may engage in securities lending. Securities lending involves the risk that the Fund may lose money because the borrower of the loaned securities fails to return the securities in a timely manner or at all. The Fund could also lose money in the event of a decline in the value of the collateral provided for loaned securities or a decline in the value of any investments made with cash collateral. These events could also trigger adverse tax consequences for the Fund.

Security Risk. The geographic area in which the Fund invests has experienced security concerns. Incidents involving Mexico's security may cause uncertainty in Mexican markets and may adversely affect its economy and the Fund's investments.

Tracking Error Risk. Tracking error is the divergence of the Fund’s performance from that of the Underlying Index. Tracking error may occur because of differences between the securities held in the Fund’s portfolio and those included in the Underlying Index, pricing differences (including differences between a security’s price at the local market close and the intrinsic value of a security at the time of calculation of the NAV), transaction costs, the Fund’s holding of cash, differences in timing of the accrual of dividends, changes to the Underlying Index or the need to meet various new or existing regulatory requirements. This risk may be heightened during times of increased market volatility or other unusual market conditions. Tracking error also may result because the Fund incurs fees and expenses, while the Underlying Index does not. FUNDS THAT TRACK INDICES WITH SIGNIFICANT WEIGHT IN EMERGING MARKETS ISSUERS MAY EXPERIENCE HIGHER TRACKING ERROR THAN OTHER INDEX EXCHANGE-TRADED FUNDS (“ETFs”) THAT DO NOT TRACK SUCH INDICES.

Valuation Risk. The sale price the Fund could receive for a security may differ from the Fund's valuation of the security and may differ from the value used by the Underlying Index, particularly for securities or assets that trade in low volume or volatile markets or that are valued using a fair value methodology. In addition, the value of the securities or assets in the Fund's portfolio may change on days when shareholders will not be able to purchase or sell the Fund's shares.
Risk Lose Money [Text] rr_RiskLoseMoney As with any investment, you could lose all or part of your investment in the Fund, and the Fund's performance could trail that of other investments.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus Non-Diversification Risk. The Fund may invest a large percentage of its assets in securities issued by or representing a small number of issuers. As a result, the Fund's performance may depend on the performance of a small number of issuers.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading Performance Information
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock The bar chart and table that follow show how the Fund has performed on a calendar year basis and provide an indication of the risks of investing in the Fund. Both assume that all dividends and distributions have been reinvested in the Fund. Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future. Supplemental information about the Fund’s performance is shown under the heading Total Return Information in the Supplemental Information section of the Fund's prospectus (the “Prospectus”).
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table that follow show how the Fund has performed on a calendar year basis and provide an indication of the risks of investing in the Fund.
Performance Availability Phone [Text] rr_PerformanceAvailabilityPhone 1-800-iShares (1-800-474-2737) (toll free)
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.iShares.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture Past performance (before and after taxes) does not necessarily indicate how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Year by Year Returns (Years Ended December 31)
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock The best calendar quarter return during the periods shown above was 35.52% in the 2nd quarter of 2009; the worst was -29.54% in the 4th quarter of 2008.

Updated performance information is available at www.iShares.com or by calling 1-800-iShares (1-800-474-2737) (toll free).
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns

(for the periods ended December 31, 2013)
Performance Table Market Index Changed rr_PerformanceTableMarketIndexChanged Index performance reflects the performance of the MSCI Mexico Index through November 30, 2007, the MSCI Mexico IMI beginning on December 1, 2007 through February 11, 2013 and the MSCI Mexico IMI 25/50 thereafter.
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs").
Performance Table Explanation after Tax Higher rr_PerformanceTableExplanationAfterTaxHigher Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sale of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.
iShares MSCI Mexico Capped ETF | iShares MSCI Mexico Capped ETF  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.48%rr_ManagementFeesOverAssets
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Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets none
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.48%rr_ExpensesOverAssets
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1 Year rr_ExpenseExampleYear01 49rr_ExpenseExampleYear01
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3 Years rr_ExpenseExampleYear03 154rr_ExpenseExampleYear03
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5 Years rr_ExpenseExampleYear05 269rr_ExpenseExampleYear05
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10 Years rr_ExpenseExampleYear10 604rr_ExpenseExampleYear10
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2004 rr_AnnualReturn2004 48.29%rr_AnnualReturn2004
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2005 rr_AnnualReturn2005 45.61%rr_AnnualReturn2005
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2006 rr_AnnualReturn2006 44.02%rr_AnnualReturn2006
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2007 rr_AnnualReturn2007 12.25%rr_AnnualReturn2007
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2008 rr_AnnualReturn2008 (41.67%)rr_AnnualReturn2008
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2009 rr_AnnualReturn2009 55.72%rr_AnnualReturn2009
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2010 rr_AnnualReturn2010 27.45%rr_AnnualReturn2010
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2011 rr_AnnualReturn2011 (12.32%)rr_AnnualReturn2011
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2012 rr_AnnualReturn2012 31.25%rr_AnnualReturn2012
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2013 rr_AnnualReturn2013 (1.47%)rr_AnnualReturn2013
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[1]
Year to Date Return, Label rr_YearToDateReturnLabel The Fund's year-to-date return
Bar Chart, Year to Date Return, Date rr_BarChartYearToDateReturnDate Sep. 30, 2014
Bar Chart, Year to Date Return rr_BarChartYearToDateReturn 2.46%rr_BarChartYearToDateReturn
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Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel best
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2009
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 35.52%rr_BarChartHighestQuarterlyReturn
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Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel worst
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2008
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (29.54%)rr_BarChartLowestQuarterlyReturn
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One Year rr_AverageAnnualReturnYear01 (1.47%)rr_AverageAnnualReturnYear01
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Five Years rr_AverageAnnualReturnYear05 17.61%rr_AverageAnnualReturnYear05
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Ten Years rr_AverageAnnualReturnYear10 16.44%rr_AverageAnnualReturnYear10
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Inception Date rr_AverageAnnualReturnInceptionDate Mar. 12, 1996
iShares MSCI Mexico Capped ETF | Return After Taxes on Distributions | iShares MSCI Mexico Capped ETF  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 (1.95%)rr_AverageAnnualReturnYear01
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[2]
Five Years rr_AverageAnnualReturnYear05 17.31%rr_AverageAnnualReturnYear05
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[2]
Ten Years rr_AverageAnnualReturnYear10 16.16%rr_AverageAnnualReturnYear10
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[2]
iShares MSCI Mexico Capped ETF | Return After Taxes on Distributions and Sale of Fund Shares | iShares MSCI Mexico Capped ETF  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 (0.47%)rr_AverageAnnualReturnYear01
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Five Years rr_AverageAnnualReturnYear05 14.37%rr_AverageAnnualReturnYear05
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[2]
Ten Years rr_AverageAnnualReturnYear10 14.09%rr_AverageAnnualReturnYear10
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[2]
iShares MSCI Mexico Capped ETF | MSCI Mexico IMI 25/50 (Index returns do not reflect deductions for fees, expenses, or taxes)  
Risk/Return: rr_RiskReturnAbstract  
One Year rr_AverageAnnualReturnYear01 (1.17%)rr_AverageAnnualReturnYear01
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[3]
Five Years rr_AverageAnnualReturnYear05 17.45%rr_AverageAnnualReturnYear05
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[3]
Ten Years rr_AverageAnnualReturnYear10 16.07%rr_AverageAnnualReturnYear10
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[3]
[1] The Fund's year-to-date return as of September 30, 2014 was 2.46%.
[2] After-tax returns in the table above are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state or local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown, and after-tax returns shown are not relevant to tax-exempt investors or investors who hold shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts ("IRAs"). Fund returns after taxes on distributions and sales of Fund shares are calculated assuming that an investor has sufficient capital gains of the same character from other investments to offset any capital losses from the sale of Fund shares. As a result, Fund returns after taxes on distributions and sales of Fund shares may exceed Fund returns before taxes and/or returns after taxes on distributions.
[3] Index performance reflects the performance of the MSCI Mexico Index through November 30, 2007, the MSCI Mexico IMI beginning on December 1, 2007 through February 11, 2013 and the MSCI Mexico IMI 25/50 thereafter.