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Risk/Return: rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName iSHARES INC
Prospectus Date rr_ProspectusDate Dec. 30, 2011
iShares MSCI Emerging Markets Asia Index Fund | iShares MSCI Emerging Markets Asia Index Fund
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets none
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.68%
Fee Waiver rr_FeeWaiverOrReimbursementOverAssets (0.19%)
Total Annual Operating Expenses After Fee Waiver rr_NetExpensesOverAssets 0.49%
1 Year rr_ExpenseExampleYear01 50
3 Years rr_ExpenseExampleYear03 157
iShares MSCI Emerging Markets Asia Index Fund
  
Risk/Return: rr_RiskReturnAbstract  
Risk/Return [Heading] rr_RiskReturnHeading

iSHARES® MSCI EMERGING MARKETS ASIA INDEX FUND

Ticker: EEMA Stock Exchange: NASDAQ
Objective [Heading] rr_ObjectiveHeading

Investment Objective
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock

The iShares MSCI Emerging Markets Asia Index Fund (the "Fund") seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the MSCI Emerging Markets Asia Index (the "Underlying Index").
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") (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. BFA, the investment adviser to the Fund, has contractually agreed to waive a portion of its management fees in order to limit Total Annual Operating Expenses to 0.49% of average daily net assets until December 31, 2014.

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)

Fee Waiver or Reimbursement over Assets, Date of Termination rr_FeeWaiverOrReimbursementOverAssetsDateOfTermination December 31, 2014.
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.
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 Underlying Index is designed to measure equity market performance in the emerging market countries of Asia. As of December 1, 2011, the Underlying Index consisted of issuers in the following eight emerging market countries or regions: China, India, Indonesia, Malaysia, Philippines, South Korea, Taiwan and Thailand. Component companies include consumer discretionary, energy, financial, information technology and materials companies. The component companies may change over time.

The Fund generally invests at least 80% of its assets in securities of the Underlying Index or in depositary receipts representing securities in the Underlying Index. The Fund may invest the remainder of its assets in securities not included in the Underlying Index, but which BFA believes will help the Fund track the Underlying Index and in other investments including future contracts, options on futures contracts, options and swaps related to the Underlying Index, cash and cash equivalents, including shares of money market funds advised by BFA or its affiliates.

The Fund invests all of its assets that are invested in India through a wholly owned subsidiary located in the Republic of Mauritius (the "Subsidiary"). BFA will serve as investment adviser to both the Fund and the Subsidiary. Unless otherwise indicated, the term Fund, as used in this Prospectus, means the Fund and/or the Subsidiary, as applicable.

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 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 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 sponsored 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, which may include large, mid or small capitalization companies, 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, which may include large, mid or small capitalization companies, 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 or other asset classes.

Commodity Exposure Risk. The Fund invests in economies that are susceptible to fluctuations in certain commodity markets. Any negative changes in commodity markets could have an adverse impact on those economies.

Concentration Risk. To the extent that the Fund's investments are concentrated in a particular issuer, country, region, market, industry or asset class, the Fund may be susceptible to loss due to adverse occurrences affecting that issuer, country, region, market, industry or asset class.

Consumer Discretionary Sector Risk. The consumer discretionary sector may be affected by changes in domestic and international economies, exchange and interest rates, competition, consumers' disposable income and consumer preferences, social trends and marketing campaigns.

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.

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

Energy Sector Risk. The value of securities issued by companies in the energy sector may decline for many reasons, including, without limitation, changes in commodity prices, government regulations, energy conservation efforts and potential civil liabilities.

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

Financial Sector Risk. Performance of companies in the financial 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.

Information Technology Sector Risk. Information technology companies face intense competition and potentially rapid product obsolescence. They are also heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights.

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

Lack of Natural Resources Risk. Certain economies to which the Fund may be exposed have few natural resources. Any fluctuation or shortage in the commodity markets could have a negative impact on those economies.

Management Risk. As the Fund may not fully replicate the Underlying Index, it is subject to the risk that BFA's investment management 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-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 a non-U.S. issuer or market. The Fund is specifically exposed to Asian Security Risk and Asian Structural 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. Some countries in which the Fund invests have 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 countries whose economies are heavily dependent upon trading with key partners. Any reduction in this trading may have an adverse impact on the Fund's investments.

Risk of Investing in China. China may be subject to considerable degrees of economic, political and social instability.

Risk of Investing in India. Investment in Indian issuers involves risks that are specific to India, including legal, regulatory, political and economic risks. The securities markets in India are relatively underdeveloped and may subject the Fund to higher transaction costs or greater uncertainty than investments in more developed securities markets. Such risks may adversely affect the value of the Fund's investments.

Risk of Investing in South Korea. The Fund's investments in South Korean issuers may subject the Fund to legal, regulatory, political, currency, security, and economic risks that are specific to South Korea. In addition, economic and political developments of South Korean neighbors may have an adverse effect on the South Korean economy. As a result, such risks may adversely affect the value of the Fund's investments.

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 Fund's 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. Some countries and regions in which the Fund invests have experienced security concerns. Incidents involving a country's or region's security may cause uncertainty in these markets and may adversely affect their economies and the Fund's investments.
 

Tracking Error Risk. The performance of the Fund may diverge from that of the Underlying Index. Because the Fund employs a representative sampling strategy, the Fund may experience tracking error to a greater extent than a fund that seeks to replicate an index. BFA EXPECTS THAT THE FUND MAY EXPERIENCE HIGHER TRACKING ERROR THAN IS TYPICAL FOR SIMILAR INDEX EXCHANGE-TRADED FUNDS.

Treaty/Tax Risk. The Fund and the Subsidiary rely on the Double Tax Avoidance Agreement between India and Mauritius ("DTAA") for relief from certain Indian taxes. Treaty renegotiation or legislative changes may result in higher taxes and lower returns for the Fund.

Valuation Risk. The value of the securities 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.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading

Performance Information
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock

As of the date of the Fund's prospectus (the "Prospectus"), the Fund has been in operation for less than one full calendar year and therefore does not report its performance information.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess As of the date of the Fund's prospectus (the "Prospectus"), the Fund has been in operation for less than one full calendar year and therefore does not report its performance information