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Label Element Value
Prospectus: rr_ProspectusTable  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Dec. 31, 2016
Entity Registrant Name dei_EntityRegistrantName Global X Funds
Central Index Key dei_EntityCentralIndexKey 0001432353
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Mar. 24, 2017
Document Effective Date dei_DocumentEffectiveDate Mar. 30, 2017
Prospectus Date rr_ProspectusDate Apr. 01, 2017
Global X Funds | Global X MLP ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X MLP ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X MLP ETF (“Fund”) seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Solactive MLP Infrastructure Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commission when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. For the most recent fiscal period, the Fund’s portfolio turnover rate was 37.20% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 37.20%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commission when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its net assets in the securities of the Underlying Index. Moreover, at least 80% of the Fund’s net assets will be invested in securities that have economic characteristics of the Master Limited Partnership (“MLP”) asset class. The Fund’s 80% investment policies are non-fundamental and require 60 days’ prior written notice to shareholders before they can be changed.

The Underlying Index is intended to give investors a means of tracking the performance of the energy infrastructure MLP asset class in the United States. As of December 30, 2016, the Underlying Index was comprised of 22 MLPs engaged in the transportation, storage, and processing of natural resources ("Midstream MLPs"). The Fund’s investment objective and Underlying Index may be changed without shareholder approval.
The Underlying Index is sponsored by Solactive AG, the provider of the Underlying Index ("Index Provider"), which is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.
The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.
 
The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations that apply to the Fund but not the Underlying Index.
 
Midstream MLPs are publicly traded partnerships engaged in the transportation, storage and processing of natural resources. By confining their operations to these specific activities, their interests, or units, are able to trade on public securities exchanges exactly like the shares of a corporation, without entity level taxation.

To qualify as a MLP and not to be taxed as a corporation, a partnership must receive at least 90% of its income from qualifying sources as set forth in Section 7704(d) of the Internal Revenue Code of 1986, as amended (the “Code”). These qualifying sources include interest, dividends, real estate rents, gain from the sale or disposition of real property, income and gain from mineral or natural resources activities, income and gain from the transportation or storage of certain fuels, gain from the sale or disposition of a capital asset held for the production of income described in the foregoing, and, in certain circumstances, income and gain from commodities or futures, forwards and options with respect to commodities.
 
MLPs generally have two classes of owners, the general partner and limited partners. The general partner of an MLP is typically owned by a major energy company, an investment fund, or the direct management of the MLP, or is an entity owned by one or more of such parties. The general partner may be structured as a private or publicly traded corporation or other entity. The general partner typically controls the operations and management of the MLP through an up to 2% equity interest in the MLP plus, in many cases, ownership of common units and subordinated units. Limited partners typically own the remainder of the partnership, through ownership of common units, and have a limited role in the partnership’s operations and management. MLPs are typically structured such that common units and general partner interests have first priority to receive quarterly cash distributions up to an established minimum amount (“minimum quarterly distributions” or “MQD”). Common and general partner interests also accrue arrearages in distributions to the extent the MQD is not paid. Once common and general partner interests have been paid, subordinated units receive distributions of up to the MQD; however, subordinated units do not accrue arrearages. Distributable cash in excess of the MQD is paid to both common and subordinated units and is distributed to both common and subordinated units generally on a pro rata basis. The general partner is also eligible to receive incentive distributions if the general partner operates the business in a manner which results in distributions paid per common unit surpassing specified target levels. As the general partner increases cash distributions to the limited partners, the general partner receives an increasingly higher percentage of the incremental cash distributions.
 
Due to the nature of the Fund’s investments, the Fund will not qualify as a regulated investment company under the Code. As a result, the Fund will be taxed as a regular corporation ("C" corporation)for federal income tax purposes.
The Adviser seeks a correlation over time of 95% or better between the Fund’s performance, before fund fees, expenses and taxes, and the performance of the Underlying Index. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates 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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates 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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").
 
Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.
 
Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Cash Transaction Risk: Unlike many exchange-traded funds ("ETFs"), the Fund expects to effect redemptions for cash, rather than in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in a more conventional ETF.
 
Concentration Risk: Because the Fund's investments are concentrated in the energy sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in a particular sector or industry, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a sector or industry, the Fund faces more risks than if it were diversified broadly over numerous sectors or industries. Such sector-based risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand in a particular sector or industry; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a sector or industry. In addition, at times, such sector or industry may be out of favor and underperform other sectors or industries or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Energy Sector.
 
Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.
Industry Specific Risks: MLPs operating in the energy sector are also subject to risks specific to the industry they serve.
 
Midstream. Midstream MLPs that provide crude oil, refined product and natural gas services are subject to supply and demand fluctuations in the markets they serve, which may be impacted by a wide range of factors, including fluctuating commodity prices, weather, increased conservation or use of alternative fuel sources, increased governmental or environmental regulation, depletion, rising interest rates, declines in domestic or foreign production, accidents or catastrophic events, increasing operating expenses and economic conditions, among others.

Investable Universe of Companies Risk: The investable universe of companies in which the Fund may invest may be limited. If a company no longer meets the Index Provider’s criteria for inclusion in the Underlying Index, the Fund may need to reduce or eliminate its holdings in that company. The reduction or elimination of the Fund’s holdings in the company may have an adverse impact on the liquidity of the Fund’s overall portfolio holdings and on Fund performance.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.
 
Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Liquidity Risk: Certain securities of MLPs may trade less frequently than those of larger companies due to their smaller capitalizations.
 
Management Risk: The Fund is subject to the risk that the Adviser’s investment management strategy may cause the Fund to underperform the market or its relevant benchmark or adversely affect the ability of the Fund to achieve its investment objective.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.
     
Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

MLP Risk: Investments in securities of MLPs involve risks that differ from investments in common stock, including risks related to limited control and limited rights to vote on matters affecting the MLP, risks related to potential conflicts of interest between the MLP and the MLP’s general partner, and cash flow risks. MLP common units and other equity securities can be affected by macro-economic and other factors affecting the stock market in general, expectations of interest rates, investor sentiment towards MLPs or the energy sector, changes in a particular issuer’s financial condition, or unfavorable or unanticipated poor performance of a particular issuer (in the case of MLPs, generally measured in terms of distributable cash flow). Prices of common units of individual MLPs and other equity securities also can be affected by fundamentals unique to the partnership or company, including earnings power and coverage ratios.
 
Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.
 
Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Potential Substantial After-Tax Tracking Error From Index Performance Risk: The Fund will be subject to taxation on its taxable income. The NAV of Shares will also be reduced by the accrual of any deferred tax liabilities. The Underlying Index, however, is calculated without any deductions for taxes. As a result, the Fund’s performance could differ significantly from the Underlying Index even if the pretax performance of the Fund and the performance of the Underlying Index are closely correlated. The performance of the Fund may diverge from that of the Underlying Index.

Risks Related to Investing in the Energy Sector: The value of securities issued by companies in the energy sector may decline for many reasons, including, without limitation, changes in energy prices; international politics; energy conservation; the success of exploration projects; natural disasters or other catastrophes; changes in exchange rates, interest rates, or economic conditions; changes in demand for energy products and services; and tax and other government regulatory policies.

Risks Related to Investing in the Energy Infrastructure Industry: The Fund invests primarily in energy infrastructure companies. Energy infrastructure companies are subject to risks specific to the industry they serve, including, but not limited to, the following:

• reduced volumes of natural gas or other energy commodities available for transporting, processing or storing;
• new construction and acquisition risk, which can limit growth potential;
• a sustained reduced demand for crude oil, natural gas and refined petroleum products resulting from a recession or an increase in market price or higher taxes;
• changes in the regulatory environment;
• extreme weather;
• rising interest rates, which could result in a higher cost of capital and drive investors into other investment opportunities; and
• threats of attack by terrorists.

Tax Risks: Tax risks associated with investments in the Fund include, but are not limited to, the following:
 
Deferred Tax Liability. Cash distributions from an MLP to the Fund that exceed the Fund’s allocable share of such MLP’s net taxable income are considered a tax-deferred return of capital that will reduce the Fund’s adjusted tax basis in the equity securities of the MLP. These reductions in the Fund’s adjusted tax basis in the MLP equity securities will increase the amount of gain (or decrease the amount of loss) recognized by the Fund on a subsequent sale of the securities. The Fund will accrue deferred income taxes for any future tax liability associated with (i) that portion of MLP distributions considered to be a tax-deferred return of capital as well as (ii) capital appreciation of its investments. Upon the sale of an MLP security, the Fund may be liable for previously deferred taxes. The Fund’s accrued deferred tax liability will be reflected each day in the Fund’s NAV. Increases in deferred tax liability will decrease the Fund's NAV. Conversely, decreases in deferred tax liability will increase the Fund's NAV. The Fund will rely to some extent on information provided by the MLPs in which it invests, which is not necessarily timely, to estimate deferred tax liability for purposes of financial statement reporting and determining the Fund's NAV. From time to time, the Adviser will modify the estimates or assumptions regarding the Fund’s deferred tax liability as new information becomes available. The Fund’s estimates regarding its deferred tax liability are made in good faith. However, the daily estimate of the Fund’s deferred tax liability used to calculate the Fund’s NAV could vary significantly from the Fund’s actual tax liability. The Fund will generally compute deferred income taxes based on the federal income tax rate applicable to corporations (currently 35%) and an assumed rate attributable to state taxes. To the extent that the distributions paid to you constitute a return of capital, the Fund's assets will decline. A decline in the Fund's assets may also result in an increase in the portion of a Fund's expense ratio that is not subject to a unitary fee or any other form of contractual cap, and over time the distributions paid in excess of net distributions received could work to erode the Fund's net asset value.

MLP Tax Risk. MLPs do not pay U.S. federal income tax at the partnership level. Rather, each partner is allocated a share of the partnership’s income, gains, losses, deductions and expenses. A change in current tax law, or a change in the underlying business mix of a given MLP, could result in an MLP being treated as a corporation for U.S. federal income tax purposes, which would result in such MLP being required to pay U.S. federal income tax on its taxable income. The classification of an MLP as a corporation for U.S. federal income tax purposes would have the effect of reducing the amount of cash available for distribution by the MLP. Thus, if any of the MLPs owned by the Fund were treated as corporations for U.S. federal income tax purposes, it could result in a reduction in the value of your investment in the Fund and lower income.

Return of Capital Distributions From the Fund Reduce the Tax Basis of Fund Shares. A portion of the Fund’s distributions are expected to be treated as a return of capital for tax purposes. Return of capital distributions are not taxable income to you, but reduce your tax basis in your Fund Shares. Such a reduction in tax basis will result in larger taxable gains and/or lower tax losses on a subsequent sale of Fund Shares. Shareholders who sell their Shares for less than they bought them may still recognize a gain due to the reduction in tax basis. Shareholders who periodically receive the payment of dividends or other distributions consisting of a return of capital may be under the impression that they are receiving net profits from the Fund when, in fact, they are not. Shareholders should not assume that the source of the distributions is from the net profits of the Fund. To the extent that the distributions paid to you constitute a return of capital, the Fund's assets will decline. A decline in the Fund's assets may also result in an increase in the portion of a Fund's expense ratio that is not subject to a unitary fee or any other form of contractual cap, and over time the distributions paid in excess of net distributions received could work to erode the Fund's net asset value.

Tax Status of the Fund. The Fund is taxed as a regular corporation ("C" corporation) for federal income tax purposes. This differs from most investment companies, which elect to be treated as regulated investment companies under the Code in order to avoid paying entity level income taxes. Under current law, the Fund is not eligible to elect treatment as a regulated investment company due to its investments primarily in MLPs invested in energy assets. As a result, the Fund will be obligated to pay applicable federal and state corporate income taxes on its taxable income as opposed to most investment companies which are not so obligated. As discussed below, the Fund expects that a portion of the distributions it receives from MLPs may be treated as a tax-deferred return of capital, thus reducing the Fund’s current tax liability. However, the amount of taxes currently paid by the Fund will vary depending on the amount of income and gains derived from investments and/or sales of MLP interests and such taxes may reduce your return from an investment in the Fund.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
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 performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance. On or around March 30, 2015, there was a change in the Fund's Underlying Index from Solactive MLP Composite Index to Solactive MLP Infrastructure Index.The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future. Updated performance information is available online at www.globalxfunds.com.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table that follow show how the Fund performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.globalxfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Annual Total Returns (Years Ended December 31)
Bar Chart Footnotes [Text Block] rr_BarChartFootnotesTextBlock
Best Quarter:
06/30/16
21.41%
Worst Quarter:
09/30/15
-22.32%
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for the Periods Ended December 31, 2016) 
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
1     After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown above. After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).

2    Hybrid Index performance reflects the performance of the Solactive MLP Composite Index through March 31, 2015 and Solactive MLP Infrastructure Index thereafter.
Global X Funds | Global X MLP ETF | Hybrid Solactive MLP Infrastructure Index (net)  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel Hybrid Solactive MLP Infrastructure Index (net)
1 Year rr_AverageAnnualReturnYear01 20.10% [1]
Since Inception rr_AverageAnnualReturnSinceInception 2.87% [1]
Global X Funds | Global X MLP ETF | S&P 500 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel S&P 500 Index
1 Year rr_AverageAnnualReturnYear01 11.96%
Since Inception rr_AverageAnnualReturnSinceInception 13.14%
Global X Funds | Global X MLP ETF | Global X MLP ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol MLPA
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.45%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.02% [2]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.47%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 48
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 151
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 263
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 591
Annual Return 2013 rr_AnnualReturn2013 17.82%
Annual Return 2014 rr_AnnualReturn2014 4.15%
Annual Return 2015 rr_AnnualReturn2015 (30.13%)
Annual Return 2016 rr_AnnualReturn2016 21.12%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 21.41%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (22.32%)
Label rr_AverageAnnualReturnLabel Return before taxes
1 Year rr_AverageAnnualReturnYear01 21.12%
Since Inception rr_AverageAnnualReturnSinceInception 1.11%
Inception Date rr_AverageAnnualReturnInceptionDate Apr. 18, 2012
Global X Funds | Global X MLP ETF | Global X MLP ETF | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 21.04% [3]
Since Inception rr_AverageAnnualReturnSinceInception 0.21% [3]
Global X Funds | Global X MLP ETF | Global X MLP ETF | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions and sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 7.88% [3]
Since Inception rr_AverageAnnualReturnSinceInception (0.90%) [3]
Global X Funds | Global X Junior MLP ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Junior MLP ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Junior MLP ETF (“Fund”) seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Solactive Junior MLP Composite Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commission when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. For the most recent fiscal period, the Fund’s portfolio turnover rate was 61.56% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 61.56%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commission when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its net assets in the securities of the Underlying Index.  Moreover, at least 80% of the Fund’s net assets will be invested in securities that have economic characteristics of the small-capitalization ("small-cap") segment of the Master Limited Partnership (“MLP”) asset class. For purposes of this policy, the Fund considers small-cap companies to be those companies included in, or similar in size to those included in, the Solactive Junior MLP Composite Index, as of the latest reconstitution date, at the time of purchase.  As of December 30, 2016, the market capitalization of the Underlying Index was between $500 million and $11 billion. The Fund’s capitalization range will change over time.  The Fund’s 80% investment policies are non-fundamental and require 60 days’ prior written notice to shareholders before they can be changed.

The Underlying Index is intended to give investors a means of tracking the overall performance of the small-capitalization segment of the MLP asset class in the United States. As of December 30, 2016, the Underlying Index was comprised of 30 MLPs engaged in the transportation, storage, processing, refining, marketing, exploration, production, and mining of natural resources. The Fund’s investment objective and Underlying Index may be changed without shareholder approval.
 
The Underlying Index is sponsored by Solactive AG, the provider of the Underlying Index ("Index Provider"), which is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.
 
The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.
 
The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations that apply to the Fund but not the Underlying Index.
 
MLPs are publicly traded partnerships engaged in the transportation, storage, processing, refining, marketing, exploration, production, and mining of natural resources. By confining their operations to these specific activities, their interests, or units, are able to trade on public securities exchanges exactly like the shares of a corporation, without entity level taxation.
 
To qualify as a MLP and not to be taxed as a corporation, a partnership must receive at least 90% of its income from qualifying sources as set forth in Section 7704(d) of the Internal Revenue Code of 1986, as amended (the “Code”). These qualifying sources include interest, dividends, real estate rents, gain from the sale or disposition of real property, income and gain from mineral or natural resources activities, income and gain from the transportation or storage of certain fuels, gain from the sale or disposition of a capital asset held for the production of income described in the foregoing, and, in certain circumstances, income and gain from commodities or futures, forwards and options with respect to commodities.
 
MLPs generally have two classes of owners, the general partner and limited partners. The general partner of an MLP is typically owned by a major energy company, an investment fund, or the direct management of the MLP, or is an entity owned by one or more of such parties. The general partner may be structured as a private or publicly traded corporation or other entity. The general partner typically controls the operations and management of the MLP through an up to 2% equity interest in the MLP plus, in many cases, ownership of common units and subordinated units. Limited partners typically own the remainder of the partnership, through ownership of common units, and have a limited role in the partnership’s operations and management. MLPs are typically structured such that common units and general partner interests have first priority to receive quarterly cash distributions up to an established minimum amount (“minimum quarterly distributions” or “MQD”). Common and general partner interests also accrue arrearages in distributions to the extent the MQD is not paid. Once common and general partner interests have been paid, subordinated units receive distributions of up to the MQD; however, subordinated units do not accrue arrearages. Distributable cash in excess of the MQD is paid to both common and subordinated units and is distributed to both common and subordinated units generally on a pro rata basis. The general partner is also eligible to receive incentive distributions if the general partner operates the business in a manner which results in distributions paid per common unit surpassing specified target levels. As the general partner increases cash distributions to the limited partners, the general partner receives an increasingly higher percentage of the incremental cash distributions.
 
Due to the nature of the Fund’s investments, the Fund will not qualify as a regulated investment company under the Code. As a result, the Fund will be taxed as a regular corporation ("C" corporation) for federal income tax purposes.
 
The Adviser seeks a correlation over time of 95% or better between the Fund’s performance, before fund fees, expenses and taxes, and the performance of the Underlying Index. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates 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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates 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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").
 
Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.
 
Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Cash Transaction Risk: Unlike many exchange-traded funds ("ETFs"), the Fund expects to effect redemptions for cash, rather than in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in a more conventional ETF.
 
Concentration Risk: Because the Fund's investments are concentrated in the energy sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in a particular sector or industry, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a sector or industry, the Fund faces more risks than if it were diversified broadly over numerous sectors or industries. Such sector-based risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand in a particular sector or industry; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a sector or industry. In addition, at times, such sector or industry may be out of favor and underperform other sectors or industries or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Energy Sector.
 
Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.
 
Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.
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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

Industry Specific Risk: MLPs operating in the energy sector are also subject to risks specific to the industry they serve.
 
Midstream. Midstream MLPs that provide crude oil, refined product and natural gas services are subject to supply and demand fluctuations in the markets they serve, which may be impacted by a wide range of factors, including fluctuating commodity prices, weather, increased conservation or use of alternative fuel sources, increased governmental or environmental regulation, depletion, rising interest rates, declines in domestic or foreign production, accidents or catastrophic events, increasing operating expenses and economic conditions, among others.
 
Exploration and Production. Exploration and production MLPs produce energy resources, including natural gas and crude oil. Exploration and production MLPs that own oil and gas reserves are particularly vulnerable to declines in the demand for and prices of crude oil and natural gas. Substantial downward adjustments in reserve estimates could have a material adverse effect on the value of such reserves and the financial condition of an MLP. Exploration and production MLPs seek to reduce cash flow volatility associated with commodity prices by executing multi-year hedging strategies that fix the price of gas and oil produced. There can be no assurance that the hedging strategies currently employed by these MLPs are currently effective or will remain effective.
 
Marine Shipping. Marine shipping MLPs are primarily marine transporters of natural gas, crude oil or refined petroleum products. Marine shipping companies are exposed to many of the same risks as other energy companies. The highly cyclical nature of the marine transportation industry may lead to volatile changes in charter rates and vessel values, which may adversely affect the revenues, profitability and cash flows of MLPs with marine transportation assets.
 
Propane. Propane MLPs are distributors or propane to homeowners for space and water heating. MLPs with propane assets are subject to earnings variability based upon weather conditions in the markets they serve, fluctuating commodity prices, customer conservation and increased use of alternative fuels, increased governmental or environmental regulation, and accidents or catastrophic events, among others.

Natural Resource. MLPs with coal, timber, fertilizer and other mineral assets are subject to supply and demand fluctuations in the markets they serve, which will be impacted by a wide range of domestic and foreign factors including fluctuating commodity prices, the level of their customers’ coal stockpiles, weather, increased conservation or use of alternative fuel sources, increased governmental or environmental regulation, depletion, declines in production, mining accidents or catastrophic events, health claims and economic conditions, among others.

International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Investable Universe of Companies Risk: The investable universe of companies in which the Fund may invest may be limited. If a company no longer meets the Index Provider’s criteria for inclusion in the Underlying Index, the Fund may need to reduce or eliminate its holdings in that company. The reduction or elimination of the Fund’s holdings in the company may have an adverse impact on the liquidity of the Fund’s overall portfolio holdings and on Fund performance.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Liquidity Risk: Certain securities of MLPs may trade less frequently than those of larger companies due to their smaller capitalizations.
 
Market Risk: The Fund faces numerous market trading risks, including the potential lack of an active market for 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 may lead to the Shares trading at a premium or discount to NAV.
 
Market Trading Risk: The Fund faces numerous market trading risks, including the potential lack of an active market for Shares, losses from trading in secondary markets, and disruption in the creation/redemption process of the Fund. Any of these factors may lead to the Shares trading at a premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to NAV, the shareholder may sustain losses.
 
Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

MLP Risk: Investments in securities of MLPs involve risks that differ from investments in common stock, including risks related to limited control and limited rights to vote on matters affecting the MLP, risks related to potential conflicts of interest between the MLP and the MLP’s general partner, and cash flow risks. MLP common units and other equity securities can be affected by macro-economic and other factors affecting the stock market in general, expectations of interest rates, investor sentiment towards MLPs or the energy sector, changes in a particular issuer’s financial condition, or unfavorable or unanticipated poor performance of a particular issuer (in the case of MLPs, generally measured in terms of distributable cash flow). Prices of common units of individual MLPs and other equity securities also can be affected by fundamentals unique to the partnership or company, including earnings power and coverage ratios.
 
Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.
 
Potential Substantial After-Tax Tracking Error From Index Performance Risk: The Fund will be subject to taxation on its taxable income. The NAV of Shares will also be reduced by the accrual of any deferred tax liabilities. The Underlying Index, however, is calculated without any deductions for taxes. As a result, the Fund’s performance could differ significantly from the Underlying Index even if the pretax performance of the Fund and the performance of the Underlying Index are closely correlated. The performance of the Fund may diverge from that of the Underlying Index.
 
Risks Related to Investing in the Energy Sector: The value of securities issued by companies in the energy sector may decline for many reasons, including, without limitation, changes in energy prices; international politics; energy conservation; the success of exploration projects; natural disasters or other catastrophes; changes in exchange rates, interest rates, or economic conditions; changes in demand for energy products and services; and tax and other government regulatory policies.

Risks Related to the Energy Infrastructure Industry: The Fund invests primarily in energy infrastructure companies. Energy infrastructure companies are subject to risks specific to the industry they serve, including, but not limited to, the following:

• reduced volumes of natural gas or other energy commodities available for transporting, processing or storing;
• new construction and acquisition risk, which can limit growth potential;
• a sustained reduced demand for crude oil, natural gas and refined petroleum products resulting from a recession or an increase in market price or higher taxes;
• changes in the regulatory environment;
• extreme weather;
• rising interest rates, which could result in a higher cost of capital and drive investors into other investment opportunities; and
• threats of attack by terrorists.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Tax Risks: Tax risks associated with investments in the Fund include, but are not limited to, the following:
 
Deferred Tax Liability. Cash distributions from an MLP to the Fund that exceed the Fund’s allocable share of such MLP’s net taxable income are considered a tax-deferred return of capital that will reduce the Fund’s adjusted tax basis in the equity securities of the MLP. These reductions in the Fund’s adjusted tax basis in the MLP equity securities will increase the amount of gain (or decrease the amount of loss) recognized by the Fund on a subsequent sale of the securities. The Fund will accrue deferred income taxes for any future tax liability associated with (i) that portion of MLP distributions considered to be a tax-deferred return of capital as well as (ii) capital appreciation of its investments. Upon the sale of an MLP security, the Fund may be liable for previously deferred taxes. The Fund’s accrued deferred tax liability will be reflected each day in the Fund’s NAV. Increases in deferred tax liability will decrease the Fund's NAV. Conversely, decreases in deferred tax liability will increase the Fund's NAV. The Fund will rely to some extent on information provided by the MLPs in which it invests, which is not necessarily timely, to estimate deferred tax liability for purposes of financial statement reporting and determining the Fund's NAV. From time to time, the Adviser will modify the estimates or assumptions regarding the Fund’s deferred tax liability as new information becomes available. The Fund’s estimates regarding its deferred tax liability are made in good faith. However, the daily estimate of the Fund’s deferred tax liability used to calculate the Fund’s NAV could vary significantly from the Fund’s actual tax liability. The Fund will generally compute deferred income taxes based on the federal income tax rate applicable to corporations (currently 35%) and an assumed rate attributable to state taxes. To the extent that the distributions paid to you constitute a return of capital, the Fund's assets will decline. A decline in the Fund's assets may also result in an increase in the portion of a Fund's expense ratio that is not subject to a unitary fee or any other form of contractual cap, and over time the distributions paid in excess of net distributions received could work to erode the Fund's net asset value.

MLP Tax Risk. MLPs do not pay U.S. federal income tax at the partnership level. Rather, each partner is allocated a share of the partnership’s income, gains, losses, deductions and expenses. A change in current tax law, or a change in the underlying business mix of a given MLP, could result in an MLP being treated as a corporation for U.S. federal income tax purposes, which would result in such MLP being required to pay U.S. federal income tax on its taxable income. The classification of an MLP as a corporation for U.S. federal income tax purposes would have the effect of reducing the amount of cash available for distribution by the MLP. Thus, if any of the MLPs owned by the Fund were treated as corporations for U.S. federal income tax purposes, it could result in a reduction in the value of your investment in the Fund and lower income.
 
Return of Capital Distributions From the Fund Reduce the Tax Basis of Fund Shares. A portion of the Fund’s distributions are expected to be treated as a return of capital for tax purposes. Return of capital distributions are not taxable income to you, but reduce your tax basis in your Fund Shares. Such a reduction in tax basis will result in larger taxable gains and/or lower tax losses on a subsequent sale of Fund Shares. Shareholders who sell their Shares for less than they bought them may still recognize a gain due to the reduction in tax basis. Shareholders who periodically receive the payment of dividends or other distributions consisting of a return of capital may be under the impression that they are receiving net profits from the Fund when, in fact, they are not. Shareholders should not assume that the source of the distributions is from the net profits of the Fund. To the extent that the distributions paid to you constitute a return of capital, the Fund's assets will decline. A decline in the Fund's assets may also result in an increase in the portion of a Fund's expense ratio that is not subject to a unitary fee or any other form of contractual cap, and over time the distributions paid in excess of net distributions received could work to erode the Fund's net asset value.

Tax Status of the Fund. The Fund is taxed as a regular corporation ("C" corporation) for federal income tax purposes. This differs from most investment companies, which elect to be treated as regulated investment companies under the Code in order to avoid paying entity level income taxes. Under current law, the Fund is not eligible to elect treatment as a regulated investment company due to its investments primarily in MLPs invested in energy assets. As a result, the Fund will be obligated to pay applicable federal and state corporate income taxes on its taxable income as opposed to most investment companies which are not so obligated. As discussed below, the Fund expects that a portion of the distributions it receives from MLPs may be treated as a tax-deferred return of capital, thus reducing the Fund’s current tax liability. However, the amount of taxes currently paid by the Fund will vary depending on the amount of income and gains derived from investments and/or sales of MLP interests and such taxes may reduce your return from an investment in the Fund.
 
Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
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 performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance. The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future. Updated performance information is available online at www.globalxfunds.com.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table that follow show how the Fund performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.globalxfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Annual Total Returns (Years Ended December 31)
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Best Quarter:
06/30/16
16.65%
Worst Quarter:
09/30/15
-29.26%
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for the Periods Ended December 31, 2016)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown above. After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
Global X Funds | Global X Junior MLP ETF | Solactive Junior MLP Composite Index (net)  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel Solactive Junior MLP Composite Index (net)
1 Year rr_AverageAnnualReturnYear01 20.67%
Since Inception rr_AverageAnnualReturnSinceInception (5.04%)
Global X Funds | Global X Junior MLP ETF | S&P 500 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel S&P 500 Index
1 Year rr_AverageAnnualReturnYear01 11.96%
Since Inception rr_AverageAnnualReturnSinceInception 13.56%
Global X Funds | Global X Junior MLP ETF | Global X Junior MLP ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol MLPJ
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets 0.13% [4]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.88%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 90
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 281
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 488
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 1,084
Annual Return 2014 rr_AnnualReturn2014 (8.13%)
Annual Return 2015 rr_AnnualReturn2015 (38.03%)
Annual Return 2016 rr_AnnualReturn2016 19.52%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 16.65%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (29.26%)
Label rr_AverageAnnualReturnLabel Return before taxes
1 Year rr_AverageAnnualReturnYear01 19.52%
Since Inception rr_AverageAnnualReturnSinceInception (6.17%)
Inception Date rr_AverageAnnualReturnInceptionDate Jan. 14, 2013
Global X Funds | Global X Junior MLP ETF | Global X Junior MLP ETF | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 19.52% [5]
Since Inception rr_AverageAnnualReturnSinceInception (7.86%) [5]
Global X Funds | Global X Junior MLP ETF | Global X Junior MLP ETF | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions and sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 6.48% [5]
Since Inception rr_AverageAnnualReturnSinceInception (5.95%) [5]
Global X Funds | Global X MLP Natural Gas ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X MLP Natural Gas ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X MLP Natural Gas ETF (“Fund”) seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the Solactive MLP Natural Gas Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commission when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. The Fund had not yet commenced investment operations as of the most recent fiscal year end. Thus, no portfolio turnover rate is provided for the Fund.
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commission when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its net assets in the securities of the Underlying Index. Moreover, at least 80% of the Fund’s net assets will be invested in securities that have economic characteristics of the Master Limited Partnership (“MLP”) natural gas asset class. The Fund’s 80% investment policies are non-fundamental and require 60 days’ prior written notice to shareholders before they can be changed.
 
The Index is intended to give investors a means of tracking the performance of the United States MLP natural gas asset class in the United States. As of December 30, 2016, the Underlying Index was comprised of 25 MLPs engaged in the transportation, storage, processing, marketing, exploration and production of natural gas. The Fund’s investment objective and Underlying Index may be changed without shareholder approval.
 
The Underlying Index is sponsored by Solactive AG, the provider of the Underlying Index ("Index Provider"), which is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.
The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.
 
The Fund uses a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations that apply to the Fund but not the Underlying Index.
 
MLPs are publicly traded partnerships engaged in the transportation, storage, processing, refining, marketing, exploration, production, and mining of natural resources. By confining their operations to these specific activities, their interests, or units, are able to trade on public securities exchanges exactly like the shares of a corporation, without entity level taxation.
 
To qualify as a MLP and not to be taxed as a corporation, a partnership must receive at least 90% of its income from qualifying sources as set forth in Section 7704(d) of the Internal Revenue Code of 1986, as amended (the “Code”). These qualifying sources include interest, dividends, real estate rents, gain from the sale or disposition of real property, income and gain from mineral or natural resources activities, income and gain from the transportation or storage of certain fuels, gain from the sale or disposition of a capital asset held for the production of income described in the foregoing, and, in certain circumstances, income and gain from commodities or futures, forwards and options with respect to commodities.
 
MLPs generally have two classes of owners, the general partner and limited partners. The general partner of an MLP is typically owned by a major energy company, an investment fund, or the direct management of the MLP, or is an entity owned by one or more of such parties. The general partner may be structured as a private or publicly traded corporation or other entity. The general partner typically controls the operations and management of the MLP through an up to 2% equity interest in the MLP plus, in many cases, ownership of common units and subordinated units. Limited partners typically own the remainder of the partnership, through ownership of common units, and have a limited role in the partnership’s operations and management. MLPs are typically structured such that common units and general partner interests have first priority to receive quarterly cash distributions up to an established minimum amount (“minimum quarterly distributions” or “MQD”). Common and general partner interests also accrue arrearages in distributions to the extent the MQD is not paid. Once common and general partner interests have been paid, subordinated units receive distributions of up to the MQD; however, subordinated units do not accrue arrearages. Distributable cash in excess of the MQD is paid to both common and subordinated units and is distributed to both common and subordinated units generally on a pro rata basis. The general partner is also eligible to receive incentive distributions if the general partner operates the business in a manner which results in distributions paid per common unit surpassing specified target levels. As the general partner increases cash distributions to the limited partners, the general partner receives an increasingly higher percentage of the incremental cash distributions.
 
Due to the nature of the Fund’s investments, the Fund will not qualify as a regulated investment company under the Code. As a result, the Fund will be taxed as a regular corporation ("C" corporation)for federal income tax purposes.
 
The Adviser seeks a correlation over time of 95% or better between the Fund’s performance, before fund fees, expenses, and taxes, and the performance of the Underlying Index. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.
 
The Fund concentrates 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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates 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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").
 
Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.
 
Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Cash Transaction Risk: Unlike many exchange-traded funds ("ETFs"), the Fund expects to effect redemptions for cash, rather than in-kind. As a result, an investment in the Fund may be less tax-efficient than an investment in a more conventional ETF.
 
Concentration Risk: Because the Fund's investments are concentrated in the energy sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in a particular sector or industry, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a sector or industry, the Fund faces more risks than if it were diversified broadly over numerous sectors or industries. Such sector-based risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand in a particular sector or industry; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a sector or industry. In addition, at times, such sector or industry may be out of favor and underperform other sectors or industries or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Energy Sector.
 
Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.
 
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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

Industry Specific Risk: MLPs operating in the energy sector are also subject to risks specific to the industry they serve.
 
Midstream. Midstream MLPs that provide crude oil, refined product and natural gas services are subject to supply and demand fluctuations in the markets they serve, which may be impacted by a wide range of factors, including fluctuating commodity prices, weather, increased conservation or use of alternative fuel sources, increased governmental or environmental regulation, depletion, rising interest rates, declines in domestic or foreign production, accidents or catastrophic events, increasing operating expenses and economic conditions, among others.

Exploration and production. Exploration and production MLPs produce energy resources, including natural gas and crude oil. Exploration and production MLPs that own oil and gas reserves are particularly vulnerable to declines in the demand for and prices of crude oil and natural gas. Substantial downward adjustments in reserve estimates could have a material adverse effect on the value of such reserves and the financial condition of an MLP. Exploration and production MLPs seek to reduce cash flow volatility associated with commodity prices by executing multi-year hedging strategies that fix the price of gas and oil produced. There can be no assurance that the hedging strategies currently employed by these MLPs are currently effective or will remain effective.

Marine shipping. Marine shipping MLPs are primarily marine transporters of natural gas, crude oil or refined petroleum products. Marine shipping companies are exposed to many of the same risks as other energy companies. The highly cyclical nature of the marine transportation industry may lead to volatile changes in charter rates and vessel values, which may adversely affect the revenues, profitability and cash flows of MLPs with marine transportation assets.
 
Propane. Propane MLPs are distributors of propane to homeowners for space and water heating. MLPs with propane assets are subject to earnings variability based upon weather conditions in the markets they serve, fluctuating commodity prices, customer conservation and increased use of alternative fuels, increased governmental or environmental regulation, and accidents or catastrophic events, among others.

Natural Resource. MLPs with coal, timber, fertilizer and other mineral assets are subject to supply and demand fluctuations in the markets they serve, which will be impacted by a wide range of domestic and foreign factors including fluctuating commodity prices, the level of their customers’ coal stockpiles, weather, increased conservation or use of alternative fuel sources, increased governmental or environmental regulation, depletion, declines in production, mining accidents or catastrophic events, health claims and economic conditions, among others.

Investable Universe of Companies Risk: The investable universe of companies in which the Fund may invest may be limited. If a company no longer meets the Index Provider’s criteria for inclusion in the Underlying Index, the Fund may need to reduce or eliminate its holdings in that company. The reduction or elimination of the Fund’s holdings in the company may have an adverse impact on the liquidity of the Fund’s overall portfolio holdings and on Fund performance.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Liquidity Risk: Certain securities of MLPs may trade less frequently than those of larger companies due to their smaller capitalizations.
 
Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.
 
Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

MLP Risk: Investments in securities of MLPs involve risks that differ from investments in common stock, including risks related to limited control and limited rights to vote on matters affecting the MLP, risks related to potential conflicts of interest between the MLP and the MLP’s general partner, and cash flow risks. MLP common units and other equity securities can be affected by macro-economic and other factors affecting the stock market in general, expectations of interest rates, investor sentiment towards MLPs or the energy sector, changes in a particular issuer’s financial condition, or unfavorable or unanticipated poor performance of a particular issuer (in the case of MLPs, generally measured in terms of distributable cash flow). Prices of common units of individual MLPs and other equity securities also can be affected by fundamentals unique to the partnership or company, including earnings power and coverage ratios.
 
Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
 
Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.
 
Potential Substantial After-Tax Tracking Error From Index Performance Risk: The Fund will be subject to taxation on its taxable income. The NAV of Shares will also be reduced by the accrual of any deferred tax liabilities. The Underlying Index, however, is calculated without any deductions for taxes. As a result, the Fund’s performance could differ significantly from the Underlying Index even if the pretax performance of the Fund and the performance of the Underlying Index are closely correlated. The performance of the Fund may diverge from that of the Underlying Index.
 
Risks Related to Investing in the Energy Sector: The value of securities issued by companies in the energy sector may decline for many reasons, including, without limitation, changes in energy prices; international politics; energy conservation; the success of exploration projects; natural disasters or other catastrophes; changes in exchange rates, interest rates, or economic conditions; changes in demand for energy products and services; and tax and other government regulatory policies.
 
Risks Related to the Energy Infrastructure Industry: The Fund invests primarily in energy infrastructure companies. Energy infrastructure companies are subject to risks specific to the industry they serve, including, but not limited to, the following:

• reduced volumes of natural gas or other energy commodities available for transporting, processing or storing;
• new construction and acquisition risk, which can limit growth potential;
• a sustained reduced demand for crude oil, natural gas and refined petroleum products resulting from a recession or an increase in market price or higher taxes;
• changes in the regulatory environment;
• extreme weather;
• rising interest rates, which could result in a higher cost of capital and drive investors into other investment opportunities; and
• threats of attack by terrorists.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.
 
Tax Risks: Tax risks associated with investments in the Fund include, but are not limited to, the following:
 
Deferred Tax Liability. Cash distributions from an MLP to the Fund that exceed the Fund’s allocable share of such MLP’s net taxable income are considered a tax-deferred return of capital that will reduce the Fund’s adjusted tax basis in the equity securities of the MLP. These reductions in the Fund’s adjusted tax basis in the MLP equity securities will increase the amount of gain (or decrease the amount of loss) recognized by the Fund on a subsequent sale of the securities. The Fund will accrue deferred income taxes for any future tax liability associated with (i) that portion of MLP distributions considered to be a tax-deferred return of capital as well as (ii) capital appreciation of its investments. Upon the sale of an MLP security, the Fund may be liable for previously deferred taxes. The Fund’s accrued deferred tax liability will be reflected each day in the Fund’s NAV. Increases in deferred tax liability will decrease the Fund's NAV. Conversely, decreases in deferred tax liability will increase the Fund's NAV. The Fund will rely to some extent on information provided by the MLPs in which it invests, which is not necessarily timely, to estimate deferred tax liability for purposes of financial statement reporting and determining the Fund's NAV. From time to time, the Adviser will modify the estimates or assumptions regarding the Fund’s deferred tax liability as new information becomes available. The Fund’s estimates regarding its deferred tax liability are made in good faith. However, the daily estimate of the Fund’s deferred tax liability used to calculate the Fund’s NAV could vary significantly from the Fund’s actual tax liability. The Fund will generally compute deferred income taxes based on the federal income tax rate applicable to corporations (currently 35%) and an assumed rate attributable to state taxes. To the extent that the distributions paid to you constitute a return of capital, the Fund's assets will decline. A decline in the Fund's assets may also result in an increase in the portion of a Fund's expense ratio that is not subject to a unitary fee or any other form of contractual cap, and over time the distributions paid in excess of net distributions received could work to erode the Fund's net asset value.
 
MLP Tax Risk. MLPs do not pay U.S. federal income tax at the partnership level. Rather, each partner is allocated a share of the partnership’s income, gains, losses, deductions and expenses. A change in current tax law, or a change in the underlying business mix of a given MLP, could result in an MLP being treated as a corporation for U.S. federal income tax purposes, which would result in such MLP being required to pay U.S. federal income tax on its taxable income. The classification of an MLP as a corporation for U.S. federal income tax purposes would have the effect of reducing the amount of cash available for distribution by the MLP. Thus, if any of the MLPs owned by the Fund were treated as corporations for U.S. federal income tax purposes, it could result in a reduction in the value of your investment in the Fund and lower income.
 
Return of Capital Distributions From the Fund Reduce the Tax Basis of Fund Shares. A portion of the Fund’s distributions are expected to be treated as a return of capital for tax purposes. Return of capital distributions are not taxable income to you, but reduce your tax basis in your Fund Shares. Such a reduction in tax basis will result in larger taxable gains and/or lower tax losses on a subsequent sale of Fund Shares. Shareholders who sell their Shares for less than they bought them may still recognize a gain due to the reduction in tax basis. Shareholders who periodically receive the payment of dividends or other distributions consisting of a return of capital may be under the impression that they are receiving net profits from the Fund when, in fact, they are not. Shareholders should not assume that the source of the distributions is from the net profits of the Fund. To the extent that the distributions paid to you constitute a return of capital, the Fund's assets will decline. A decline in the Fund's assets may also result in an increase in the portion of a Fund's expense ratio that is not subject to a unitary fee or any other form of contractual cap, and over time the distributions paid in excess of net distributions received could work to erode the Fund's net asset value.

Tax Status of the Fund. The Fund is taxed as a regular corporation ("C" corporation) for federal income tax purposes. This differs from most investment companies, which elect to be treated as regulated investment companies under the Code in order to avoid paying entity level income taxes. Under current law, the Fund is not eligible to elect treatment as a regulated investment company due to its investments primarily in MLPs invested in energy assets. As a result, the Fund will be obligated to pay applicable federal and state corporate income taxes on its taxable income as opposed to most investment companies which are not so obligated. As discussed below, the Fund expects that a portion of the distributions it receives from MLPs may be treated as a tax-deferred return of capital, thus reducing the Fund’s current tax liability. However, the amount of taxes currently paid by the Fund will vary depending on the amount of income and gains derived from investments and/or sales of MLP interests and such taxes may reduce your return from an investment in the Fund. Upon the sale of an MLP security, the Fund may be liable for previously deferred taxes even if the MLP security is sold at a loss.
 
Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund has not commenced operations as of the date of this prospectus. Thus, no bar chart or average annual total returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund has not commenced operations as of the date of this prospectus. Thus, no bar chart or average annual total returns table is included for the Fund.
Global X Funds | Global X MLP Natural Gas ETF | Global X MLP Natural Gas ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol MLPZ
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.58%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [6]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.58%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 59
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 186
Global X Funds | Global X MLP & Energy Infrastructure ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X MLP & Energy Infrastructure ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X MLP & Energy Infrastructure ETF (“Fund”) seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the Solactive MLP & Energy Infrastructure Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commission when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. For the most recent fiscal period, the Fund’s portfolio turnover rate was 56.14% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 56.14%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commission when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its total assets in the securities of the Underlying Index. The Fund also invests at least 80% of its total assets in securities of master limited partnerships (“MLPs”) and energy infrastructure corporations. The Fund’s 80% investment policies are non-fundamental and require 60 days’ prior written notice to shareholders before they can be changed. 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 tracks the performance of midstream MLPs and energy infrastructure corporations. Midstream energy infrastructure MLPs and corporations principally own and operate assets used in energy logistics, including, but not limited to, pipelines, storage facilities and other assets used in transporting, storing, gathering, and processing natural gas, natural gas liquids, crude oil or refined products. The Underlying Index limits its exposure to partnerships in order to comply with applicable tax diversification rules. Securities must be publicly traded in the United States. As of December 30, 2016, the Underlying Index was comprised of 38 securities. The Fund’s investment objective and Underlying Index may be changed without shareholder approval.
 
The Underlying Index is sponsored by Solactive AG, the provider of the Underlying Index ("Index Provider"), which is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.
The Adviser will use a “passive” or indexing approach to try to achieve the Fund’s investment objective. Unlike many investment companies, the Fund does not try to outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.
 
The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

MLPs are publicly traded partnerships engaged in the transportation, storage, processing, refining, marketing, exploration, production, and mining of natural resources. By confining their operations to these specific activities, their interests, or units, are able to trade on public securities exchanges exactly like the shares of a corporation, without entity level taxation.
 
To qualify as a MLP and not to be taxed as a corporation, a partnership must receive at least 90% of its income from qualifying sources as set forth in Section 7704(d) of the Internal Revenue Code of 1986, as amended (the “Code”). These qualifying sources include interest, dividends, real estate rents, gain from the sale or disposition of real property, income and gain from mineral or natural resources activities, income and gain from the transportation or storage of certain fuels, gain from the sale or disposition of a capital asset held for the production of income described in the foregoing, and, in certain circumstances, income and gain from commodities or futures, forwards and options with respect to commodities.
 
MLPs generally have two classes of owners, the general partner and limited partners. The general partner of an MLP is typically owned by a major energy company, an investment fund, or the direct management of the MLP, or is an entity owned by one or more of such parties. The general partner may be structured as a private or publicly traded corporation or other entity. The general partner typically controls the operations and management of the MLP through an up to 2% equity interest in the MLP plus, in many cases, ownership of common units and subordinated units. Limited partners typically own the remainder of the partnership, through ownership of common units, and have a limited role in the partnership’s operations and management. MLPs are typically structured such that common units and general partner interests have first priority to receive quarterly cash distributions up to an established minimum amount (“minimum quarterly distributions” or “MQD”). Common and general partner interests also accrue arrearages in distributions to the extent the MQD is not paid. Once common and general partner interests have been paid, subordinated units receive distributions of up to the MQD; however, subordinated units do not accrue arrearages. Distributable cash in excess of the MQD is paid to both common and subordinated units and is distributed to both common and subordinated units generally on a pro rata basis. The general partner is also eligible to receive incentive distributions if the general partner operates the business in a manner which results in distributions paid per common unit surpassing specified target levels. As the general partner increases cash distributions to the limited partners, the general partner receives an increasingly higher percentage of the incremental cash distributions.

The Adviser seeks a correlation over time of 95% or better between the Fund’s performance, before fund fees, expenses and taxes, and the performance of the Underlying Index. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration 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. As of December 30, 2016, the Fund was concentrated in the Energy sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.
 
Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund's investments are concentrated in the energy sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in a particular sector or industry, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a sector or industry, the Fund faces more risks than if it were diversified broadly over numerous sectors or industries. Such sector-based risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand in a particular sector or industry; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a sector or industry. In addition, at times, such sector or industry may be out of favor and underperform other sectors or industries or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Energy Sector.
  
Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.

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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

Industry Specific Risk: MLPs operating in the energy sector are also subject to risks specific to the industry they serve.
 
Midstream. Midstream MLPs that provide crude oil, refined product and natural gas services are subject to supply and demand fluctuations in the markets they serve, which may be impacted by a wide range of factors, including fluctuating commodity prices, weather, increased conservation or use of alternative fuel sources, increased governmental or environmental regulation, depletion, rising interest rates, declines in domestic or foreign production, accidents or catastrophic events, increasing operating expenses and economic conditions, among others.
  
Marine shipping. Marine shipping MLPs are primarily marine transporters of natural gas, crude oil or refined petroleum products. Marine shipping companies are exposed to many of the same risks as other energy companies. The highly cyclical nature of the marine transportation industry may lead to volatile changes in charter rates and vessel values, which may adversely affect the revenues, profitability and cash flows of MLPs with marine transportation assets.
International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Investable Universe of Companies Risk: The investable universe of companies in which the Fund may invest may be limited. If a company no longer meets the Index Provider’s criteria for inclusion in the Underlying Index, the Fund may need to reduce or eliminate its holdings in that company. The reduction or elimination of the Fund’s holdings in the company may have an adverse impact on the liquidity of the Fund’s overall portfolio holdings and on Fund performance.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.
 
Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Liquidity Risk: Certain securities of MLPs may trade less frequently than those of larger companies due to their smaller capitalizations.

Management Risk: The Fund is subject to the risk that the Adviser’s investment management strategy may cause the Fund to underperform the market or its relevant benchmark or adversely affect the ability of the Fund to achieve its investment objective.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

MLP Risk: Investments in securities of MLPs involve risks that differ from investments in common stock, including risks related to limited control and limited rights to vote on matters affecting the MLP, risks related to potential conflicts of interest between the MLP and the MLP’s general partner, and cash flow risks. MLP common units and other equity securities can be affected by macro-economic and other factors affecting the stock market in general, expectations of interest rates, investor sentiment towards MLPs or the energy sector, changes in a particular issuer’s financial condition, or unfavorable or unanticipated poor performance of a particular issuer (in the case of MLPs, generally measured in terms of distributable cash flow). Prices of common units of individual MLPs and other equity securities also can be affected by fundamentals unique to the partnership or company, including earnings power and coverage ratios.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
 
Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.
  
Potential Substantial After-Tax Tracking Error From Index Performance Risk: The Fund will be subject to taxation on its taxable income. The NAV of Shares will also be reduced by the accrual of any deferred tax liabilities. The Underlying Index, however, is calculated without any deductions for taxes. As a result, the Fund’s performance could differ significantly from the Underlying Index even if the pretax performance of the Fund and the performance of the Underlying Index are closely correlated. The performance of the Fund may diverge from that of the Underlying Index.

Risks Related to Investing in the Energy Infrastructure Industry: The Fund invests primarily in energy infrastructure companies. Energy infrastructure companies are subject to risks specific to the industry they serve, including, but not limited to, the following:

• reduced volumes of natural gas or other energy commodities available for transporting, processing or storing;
• new construction and acquisition risk, which can limit growth potential;
• a sustained reduced demand for crude oil, natural gas and refined petroleum products resulting from a recession or an increase in market price or higher taxes;
• changes in the regulatory environment;
• extreme weather;
• rising interest rates, which could result in a higher cost of capital and drive investors into other investment opportunities; and
• threats of attack by terrorists.

Risks Related to Investing in the Energy Sector: The value of securities issued by companies in the energy sector may decline for many reasons, including, without limitation, changes in energy prices; international politics; energy conservation; the success of exploration projects; natural disasters or other catastrophes; changes in exchange rates, interest rates, or economic conditions; changes in demand for energy products and services; and tax and other government regulatory policies.

Securities Lending Risk: Securities lending involves a risk of loss because the borrower may fail to return the securities in a timely manner or at all. If the Fund is not able to recover the securities loaned, it may sell the collateral and purchase a replacement security in the market. Lending securities entails a risk of loss to the Fund if and to the extent that the market value of the loaned securities increases and the collateral is not increased accordingly. Additionally, the Fund will bear any loss on the investment of cash collateral it receives. These events could also trigger adverse tax consequences for the Fund. As securities on loan may not be voted by the Fund, there is a risk that the Fund may not be able to recall the securities in sufficient time to vote on material proxy matters.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.
 
Tax Risks: Tax risks associated with investments in the Fund include, but are not limited to, the following:

MLP Tax Risk. MLPs do not pay U.S. federal income tax at the partnership level. Rather, each partner is allocated a share of the partnership’s income, gains, losses, deductions and expenses. A change in current tax law, or a change in the underlying business mix of a given MLP, could result in an MLP being treated as a corporation for U.S. federal income tax purposes, which would result in such MLP being required to pay U.S. federal income tax on its taxable income. The classification of an MLP as a corporation for U.S. federal income tax purposes would have the effect of reducing the amount of cash available for distribution by the MLP. Thus, if any of the MLPs owned by the Fund were treated as corporations for U.S. federal income tax purposes, it could result in a reduction in the value of your investment in the Fund and lower income.

Return of Capital Distributions From the Fund Reduce the Tax Basis of Fund Shares. A portion of the Fund’s distributions are expected to be treated as a return of capital for tax purposes. Return of capital distributions are not taxable income to you, but reduce your tax basis in your Fund Shares. Such a reduction in tax basis will result in larger taxable gains and/or lower tax losses on a subsequent sale of Fund Shares. Shareholders who sell their Shares for less than they bought them may still recognize a gain due to the reduction in tax basis. Shareholders who periodically receive the payment of dividends or other distributions consisting of a return of capital may be under the impression that they are receiving net profits from the Fund when, in fact, they are not. Shareholders should not assume that the source of the distributions is from the net profits of the Fund. To the extent that the distributions paid to you constitute a return of capital, the Fund's assets will decline. A decline in the Fund's assets may also result in an increase in the portion of a Fund's expense ratio that is not subject to a unitary fee or any other form of contractual cap, and over time the distributions paid in excess of net distributions received could work to erode the Fund's net asset value.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
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 performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance. The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future. Updated performance information is available online at www.globalxfunds.com.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table that follow show how the Fund performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.globalxfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future.
Bar Chart [Heading] rr_BarChartHeading Annual Total Returns (Years Ended December 31)
Bar Chart Closing [Text Block] rr_BarChartClosingTextBlock
Best Quarter:
06/30/16
21.72%
Worst Quarter:
09/30/15
-23.51%
Performance Table Heading rr_PerformanceTableHeading Average Annual Total Returns (for the Periods Ended December 31, 2016)
Performance Table Uses Highest Federal Rate rr_PerformanceTableUsesHighestFederalRate After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes.
Performance Table Not Relevant to Tax Deferred rr_PerformanceTableNotRelevantToTaxDeferred After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
Performance Table Closing [Text Block] rr_PerformanceTableClosingTextBlock
After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown above. After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
Global X Funds | Global X MLP & Energy Infrastructure ETF | Solactive MLP & Energy Infrastructure Index (net)  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel Solactive MLP & Energy Infrastructure Index (net)
1 Year rr_AverageAnnualReturnYear01 37.14%
Since Inception rr_AverageAnnualReturnSinceInception 4.02%
Global X Funds | Global X MLP & Energy Infrastructure ETF | S&P 500 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel S&P 500 Index
1 Year rr_AverageAnnualReturnYear01 11.96%
Since Inception rr_AverageAnnualReturnSinceInception 10.80%
Global X Funds | Global X MLP & Energy Infrastructure ETF | Global X MLP & Energy Infrastructure ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol MLPX
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.45%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.45%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 46
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 144
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 252
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 567
Annual Return 2014 rr_AnnualReturn2014 16.53%
Annual Return 2015 rr_AnnualReturn2015 (35.23%)
Annual Return 2016 rr_AnnualReturn2016 36.18%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 21.72%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Sep. 30, 2015
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (23.51%)
Label rr_AverageAnnualReturnLabel Return before taxes
1 Year rr_AverageAnnualReturnYear01 36.18%
Since Inception rr_AverageAnnualReturnSinceInception 3.36%
Inception Date rr_AverageAnnualReturnInceptionDate Aug. 06, 2013
Global X Funds | Global X MLP & Energy Infrastructure ETF | Global X MLP & Energy Infrastructure ETF | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 33.24% [7]
Since Inception rr_AverageAnnualReturnSinceInception 2.27% [7]
Global X Funds | Global X MLP & Energy Infrastructure ETF | Global X MLP & Energy Infrastructure ETF | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions and sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 20.84% [7]
Since Inception rr_AverageAnnualReturnSinceInception 2.02% [7]
Global X Funds | Global X SuperDividend Alternatives ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X SuperDividend® Alternatives ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X SuperDividend® Alternatives ETF (“Fund”) seeks to track, before fees and expenses, the price and yield performance of the Indxx SuperDividend® Alternatives Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commission when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 30.80%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commission when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its total assets in the securities of the Underlying Index and in American Depositary Receipts ("ADRs") and Global Depositary Receipts ("GDRs") based on the securities in the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed.

The Underlying Index is comprised of securities that rank among the highest dividend-yielding securities in each eligible category of alternative income investments, at the time of Underlying Index reconstitution, as defined by the Index Provider (which is defined below). Alternative income investments that are eligible for inclusion in the Underlying Index fall into one of four classes: Master Limited Partnerships (“MLPs”) and Infrastructure, Real Estate, Institutional Managers, and Fixed Income and Derivative Strategies. The MLPs and Infrastructure categories primarily consist of units of MLPs and shares of infrastructure companies. The Real Estate category provides exposure to global Real Estate Investment Trusts (“REITs”), and gains this exposure through investing directly in the Global X SuperDividend® REIT ETF. The Institutional Managers category primarily consists of shares of Business Development Companies (“BDCs”) and publicly listed private equity companies. The Fixed Income and Derivative Strategies category includes exposure to emerging market debt, mortgage and asset-backed securities, and option-writing primarily through the purchase of publicly traded closed-end funds (“CEFs”). Each of the Underlying Index components is selected from a universe of securities that are publicly traded in the U.S. The Underlying Index assigns weights to each of the four categories in a method that seeks to equalize the volatility contribution of each category, which assigns less weight to higher volatility categories and more weight to lower volatility categories. The Underlying Index is reconstituted annually, but may rebalance quarterly if any one category deviates more than 3% from its target weight. The Fund's investment objective and Underlying Index may be changed without shareholder approval. The Underlying Index is sponsored by an organization (“Index Provider”) that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the 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 Indxx, LLC.

The Adviser 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 Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.
 
The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to follow the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.
 
The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.
 
The Fund concentrates 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. As of December 30, 2016, the Underlying Index was concentrated in the Real Estate sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates 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. As of December 30, 2016, the Underlying Index was concentrated in the Real Estate sector.
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 ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").
 
Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.

Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

BDC Risk: BDCs may carry risks similar to those of a private equity or venture capital fund. BDC company securities are not redeemable at the option of the shareholder and they may trade in the market at a discount to their net asset value. BDCs usually trade at a discount to their net asset value because they invest in unlisted securities and have limited access to capital markets. The Fund will indirectly bear its pro rata share of the fees and expenses incurred by an BDC it invests in, including advisory fees.

Commodities Exposure Risk: To the extent that its Underlying Index invests in, or otherwise has exposure to, securities and markets that are susceptible to fluctuations in certain commodity markets, any negative changes in commodity markets could have a great impact on a Fund. Commodity prices may be influenced or characterized by unpredictable factors, including, where applicable, high volatility, changes in supply and demand relationships, weather, agriculture, trade, changes in interest rates and monetary and other governmental policies, action and inaction. Securities of companies held by a Fund that are dependent on a single commodity, or are concentrated on a single commodity sector, may typically exhibit even higher volatility attributable to commodity prices.

Concentration Risk: Because the Fund's investments are concentrated in the real estate sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in a particular sector or industry, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a sector or industry, the Fund faces more risks than if it were diversified broadly over numerous sectors or industries. Such sector-based risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand in a particular sector or industry; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a sector or industry. In addition, at times, such sector or industry may be out of favor and underperform other sectors or industries or the market as a whole. For additional details on these risks, please see Risks Related to Investing in Real Estate Stocks and Real Estate Investment Trusts ("REIT").

Credit Risk: Credit risk is the risk that an issuer of debt securities will be unable to pay principal and interest when due, or that the value of the security will suffer because investors believe the issuer is less able to make required principal and interest payments.

Currency Risk: The Fund may invest in securities denominated in foreign currencies. Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if the relevant foreign currencies depreciate 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 Market Risk: The Fund is expected to invest in securities in emerging market countries. The Fund’s investment in an emerging market country may be subject to a greater risk of loss than investments in developed markets. Securities markets of emerging market countries are less liquid, subject to greater price volatility, have smaller market capitalizations, have less government regulation, and are not subject to as extensive and frequent accounting, financial, and other reporting requirements as the securities markets of more developed countries. Because certain securities markets in the emerging countries in which the Fund may invest are small in size, underdeveloped and are less regulated and less correlated to global economic cycles than those markets located in more developed countries, the securities markets in such countries are subject to greater risks associated with market volatility, lower market capitalization, lower trading volume, illiquidity, inflation, greater price fluctuations and uncertainty regarding the existence of trading markets.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Financial Institution Risk: Certain of the securities that comprise the Underlying Index, while traded on U.S. exchanges, may be issued by foreign financial institutions. Therefore, the Fund may be subject to the risks of investing in securities issued by foreign companies, which may not be subject to the same regulations as companies domiciled in the U.S. The health of many foreign financial institutions is often tied closely with the financial stability of the local economy in which they are domiciled, and therefore are subject to additional risks including but not limited to: policy changes, slow economic growth, and high levels of debt.

Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.
Geographic Risk: A natural 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.

High Dividend Yield Stocks Risk: High yielding stocks are often speculative, high risk investments. These companies can be paying out more than they can support and may reduce their dividends or stop paying dividends at any time, which could have a material adverse effect on the stock price of these companies and the Fund’s performance.

High Yield Securities Risk: Securities that are rated below investment grade (commonly referred to as “junk bonds,” including those bonds rated lower than “BBB-“ by Standard & Poor’s® (a division of the McGraw-Hill Companies, Inc.) (“S&P”) and Fitch, Inc. (“Fitch), “Baa3” by Moody’s® Investors Service, Inc. (“Moody’s”), or “BBBL” by Dominion Bond Rating Service Limited (“Dominion”)), or are unrated but judged by the Adviser to be of comparable quality, at the time of purchase, may be more volatile than higher-rated securities of similar maturity.

Income Risk: Income risk is the risk that the Fund’s income will decline because of falling interest rates.

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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

Index Tracking Risk: The Fund’s return may not match the return of the Index for a number of reasons. For example, the Fund incurs a number of operating expenses not applicable to the Index and incurs costs associated with buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Index and raising cash to meet redemptions or deploying cash in connection with newly created Creation Units (defined herein). Because the Fund bears the costs and risks associated with buying and selling securities while such costs are not factored into the return of the Index, the Fund’s return may deviate significantly from the return of the Index. The Fund may not be fully invested at times either as a result of cash flows into the Fund or reserves of cash held by the Fund to meet redemptions or pay expenses. In addition, the Fund’s use of a representative sampling approach may cause the Fund to not be as well correlated with the return of the Index as would be the case if the Fund purchased all of the securities in the Index in the proportions represented in the Index. To the extent the Fund calculates its NAV based on fair value prices and the value of the Index is based on securities’ closing prices on local foreign markets (i.e., the value of the Index is not based on fair value prices), the Fund’s ability to track the Index may be adversely affected.

Interest Rate Risk: Interest rate risk is the risk that prices of fixed income securities generally increase when interest rates decline and decrease when interest rates increase. The Fund may lose money if short-term or long-term interest rates rise sharply.

International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Investment Company Risk: The risks of investment in investment companies, such as CEFs and BDCs, typically reflect the risks of the types of instruments in which the investment companies invest. By investing in another investment company, the Fund becomes a shareholder of that investment company and bears its proportionate share of the fees and expenses of the other investment company.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Liquidity Risk: Liquidity risk is the risk that the Fund may not be able to sell a security in a timely manner at a desired price.

Management Risk: The Fund is subject to the risk that the Adviser’s investment management strategy may cause the Fund to underperform the market or its relevant benchmark or adversely affect the ability of the Fund to achieve its investment objective.
 
Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.
 
Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Foreign Investment Company Risk: Some Fund holdings may be characterized as “passive foreign investment companies” (PFICs) for U.S. tax purposes. Because the application of the PFIC rules may affect, among other things, the character of gains and the amount of gain or loss and the timing of the recognition of income with respect to PFIC shares, and may subject the Fund itself to tax on certain income from PFIC shares, the amount that must be distributed to shareholders and will be taxed to shareholders as ordinary income or long-term capital gain may be increased or decreased substantially as compared to a fund that did not invest in PFIC shares.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Risk Related to Exposure to Non-Hedging Foreign Currency Trading: Certain of the Underlying Index constituents may engage in forward foreign currency transactions for speculative purposes. The Underlying Index constituent’s advisors may purchase or sell foreign currencies through the use of forward contracts based on the applicable advisors’ judgment regarding the direction of the market for a particular foreign currency or currencies. In pursuing this strategy, the advisors seek to profit from anticipated movements in currency rates by establishing “long” and/or “short” positions in forward contracts on various foreign currencies. Foreign exchange rates can be extremely volatile and a variance in the degree of volatility of the market or in the direction of the market from the advisors’ expectations may produce significant losses to the Underlying Index constituent.

Risk Related to Exposure to Option Trading Strategies: Options are generally subject to volatile swings in price based on changes in value of the underlying instrument, and the options written by an Underlying Index constituent may be particularly subject to this risk because of the volatility of the underlying stocks selected by the Underlying Index constituent. The Underlying Index constituent may incur a form of economic leverage through its use of options, which will increase the volatility of the Underlying Index constituent’s returns and may increase the risk of loss to the Underlying Index constituent. While the Underlying Index constituent will collect premiums on the options it writes, the Underlying Index constituent’s risk of loss if one or more of its options is exercised and expires in-the-money may substantially outweigh the gains to the Underlying Index constituent from the receipt of such option premiums. Moreover, the options sold by the Underlying Index constituent may have imperfect correlation to the returns of their underlying stocks.

Risk Related to Investing in Actively Managed Portfolios: Certain of the Underlying Index constituents are actively managed portfolios, and their success depends upon the investment skills and analytical abilities of the investment adviser to that constituent to develop and effectively implement strategies to achieve the Underlying Index constituent’s investment objective. Subjective decisions made by the investment adviser may cause the Underlying Index constituent to incur losses or to miss profit opportunities on which it may otherwise have capitalized.

Risk Related to Investing in Bonds: Investments in debt securities are generally affected by changes in prevailing interest rates and the creditworthiness of the issuer. Prices of debt securities fall when prevailing interest rates rise. The Fund’s yield on investments in debt securities will fluctuate as the securities in the Fund are rebalanced and reinvested in securities with different interest rates. Investments in bonds are also subject to credit risk. Credit risk is the risk that an issuer of debt securities will be unable to pay principal and interest when due, or that the value of the security will suffer because investors believe the issuer is less able to make required principal and interest payments. This is broadly gauged by the credit ratings of the debt securities in which the Fund invests. However, credit ratings are only the opinions of the rating agencies issuing them, do not purport to reflect the risk of fluctuations in market value and are not absolute guarantees as to the payment of interest and the repayment of principal.

Risk Related to Investing in Closed-End Funds: Common shares of CEFs frequently trade at a discount from their NAV. This risk may be greater if shares of the CEF are removed from the Underlying Index in a relatively short period of time after completion of the initial offering of the CEF.

Risk Related to Investing in ETFs: The Fund may hold ETFs to gain exposure to certain asset classes. As a result, the Fund may be subject to the same risks as the underlying ETFs. While the risks of owning shares of an underlying ETF generally reflect the risks of owning the underlying securities of the index the ETF is designed to track, lack of liquidity in an underlying ETF can result in its value being more volatile than the underlying portfolio securities. Because the value of other ETF shares depends on the demand in the market, the Adviser may not be able to liquidate the Fund’s holdings in those shares at the most optimal time, thereby adversely affecting the Fund’s performance. In addition, ETF shares may trade at a premium or discount to net asset value.

Risks Related to Investing in Exchange Traded Notes (ETNs): The Fund may hold ETNs to gain exposure to certain asset classes. As a result, the Fund may be subject to the same risks as the underlying ETNs. An ETN may trade at a premium or discount to its net asset value. The Fund will indirectly bear its pro rata share of the fees and expenses incurred by an ETN it invests in, including advisory fees, and will pay brokerage commissions in connection with the purchase and sale of shares of ETNs. ETNs that invest in commodities may be, or may become, subject to regulatory trading limits that could hurt the value of their securities and could affect the Fund’s ability to pursue its investment program as described in this prospectus. The value of an ETN may also differ from the valuation of its reference market due to changes in the issuer’s credit rating, and any payments on an ETN by an issuer is subject to the issuer's ability to pay its obligations as they become due.

Risk Related to Investing in Leveraged Portfolios: Certain of the Underlying Index components may engage in transactions that give rise to leverage. Such transactions may include, among others, reverse repurchase agreements, securities lending, forward commitment transactions, short sales and certain derivative transactions. The use of leverage may cause the Underlying Index components to liquidate portfolio positions when it may not be advantageous to do so to satisfy its obligations or to meet segregation requirements. Leverage may cause the Underlying Index component’s share price to be more volatile than if it had not been leveraged, as certain types of leverage may exaggerate the effect of any increase or decrease in the value of the Underlying Index component’s portfolio securities. The loss on leveraged investments may substantially exceed the initial investment.

Risk Related to Investing in Listed Private Equity Companies: There are certain risks inherent in investing in listed private equity companies, which encompass BDCs and other financial institutions or vehicles whose principal business is to invest in and lend capital to, or provide services to privately held companies. The 1940 Act imposes certain restraints upon the operations of a BDC. For example, BDCs are required to invest at least 70% of their total assets primarily in securities of private companies or thinly traded U.S. public companies, cash, cash equivalents, U.S. government securities and high quality debt investments that mature in one year or less. Generally, little public information exists for private and thinly traded companies, and there is a risk that investors may not be able to make a fully informed investment decision. With investments in debt instruments, there is a risk that the issuer may default on its payments or declare bankruptcy. Additionally, a BDC may incur indebtedness only in amounts such that the BDC’s asset coverage equals at least 200% after such incurrence. These limitations on asset mix and leverage may prohibit the way that the BDC raises capital. BDCs generally invest in less mature private companies, which involve greater risk than well-established, publicly-traded companies.

Risks Related to Investing in Master Limited Partnerships (MLPs): Investments in securities of MLPs involve risks that differ from investments in common stock including risks related to limited control and limited rights to vote on matters affecting the MLP, risks related to potential conflicts of interest between the MLP and the MLP’s general partner, cash flow risks, as described in more detail herein. MLP common units and other equity securities can be affected by macro-economic and other factors affecting the stock market in general, expectations of interest rates, investor sentiment towards MLPs or the energy sector, changes in a particular issuer’s financial condition, or unfavorable or unanticipated poor performance of a particular issuer (in the case of MLPs, generally measured in terms of distributable cash flow). Prices of common units of individual MLPs and other equity securities also can be affected by fundamentals unique to the partnership or company, including earnings power and coverage ratios.

Risks Related to Investing in Real Estate Stocks and Real Estate Investment Trusts ("REIT"): The Fund may have exposure to companies that invest in real estate, such as REITs, which exposes investors in the Fund to the risks of owning real estate directly, as well as to risks that relate specifically to the way in which real estate companies are organized and operated. Real estate is highly sensitive to general and local economic conditions and developments, and characterized by intense competition and periodic overbuilding. Many real estate companies, including REITs, utilize leverage (and some may be highly leveraged), which increases risk and could adversely affect a real estate company's operations and market value in periods of rising interest rates. Mortgage REITs are also exposed to credit risk, interest rate risk, and prepayment risk.

Risks Related to Investing in the Energy Sector: The value of securities issued by companies in the energy sector may decline for many reasons, including, without limitation, changes in energy prices; international politics; energy conservation; the success of exploration projects; natural disasters or other catastrophes; changes in exchange rates, interest rates, or economic conditions; changes in demand for energy products and services; and tax and other government regulatory policies.

Risk Related to Investing in the Financials Sector: 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.

Risks Related to Investing in the Infrastructure Industry: Companies in the infrastructure industry may be subject to a variety of factors that could adversely affect their business or operations, including high interest costs in connection with capital construction programs, high degrees of leverage, costs associated with governmental, environmental and other regulations, the level of government spending on infrastructure projects, and other factors. The stock prices of transportation companies may be affected by supply and demand for their specific product, government regulation, world events and economic conditions. The profitability of energy companies is related to worldwide energy prices, exploration, and production spending. Utilities companies face intense competition, which may have an adverse effect on their profit margins, and the rates charged by regulated utility companies are subject to review and limitation by governmental regulatory commissions.

Short Sale Risk: Certain of the Underlying Index constituents in which the Fund invests may engage in short sale transactions. Short sale risks include, among others, the potential loss of more money than the actual cost of the investment, and the risk that the third party to the short sale may fail to honor its contract terms, causing a loss to the Underlying Index constituent.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Strategy Risk: There is no guarantee that the Underlying Index will outperform any alternative strategy that might be employed in respect of the component assets or that past volatilities and correlations of particular asset classes will be indicative of future results.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.

Valuation Risk:
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
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 performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance. The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future. Updated performance information is available online at www.globalxfunds.com.
Performance Information Illustrates Variability of Returns [Text] rr_PerformanceInformationIllustratesVariabilityOfReturns The bar chart and table that follow show how the Fund performed on a calendar year basis and provide an indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing the Fund's average annual total returns for the indicated periods compared with the Fund's benchmark index and a broad measure of market performance.
Performance Availability Website Address [Text] rr_PerformanceAvailabilityWebSiteAddress www.globalxfunds.com
Performance Past Does Not Indicate Future [Text] rr_PerformancePastDoesNotIndicateFuture The Fund’s past performance (before and after taxes) is not necessarily indicative of how the Fund will perform in the future.
Global X Funds | Global X SuperDividend Alternatives ETF | Indxx SuperDividend® Alternatives Index (net)  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel Indxx SuperDividend® Alternatives Index (net)
1 Year rr_AverageAnnualReturnYear01 18.34%
Since Inception rr_AverageAnnualReturnSinceInception 8.92%
Global X Funds | Global X SuperDividend Alternatives ETF | S&P 500 Index  
Prospectus: rr_ProspectusTable  
Index No Deduction for Fees, Expenses, Taxes [Text] rr_IndexNoDeductionForFeesExpensesTaxes (Index returns do not reflect deductions for fees, expenses, or taxes)
Label rr_AverageAnnualReturnLabel S&P 500 Index
1 Year rr_AverageAnnualReturnYear01 11.96%
Since Inception rr_AverageAnnualReturnSinceInception 6.76%
Global X Funds | Global X SuperDividend Alternatives ETF | Global X SuperDividend Alternatives ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol ALTY
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.75%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Acquired Fund Fees and Expenses rr_AcquiredFundFeesAndExpensesOverAssets 2.44% [8]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 3.19%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 322
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 983
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 1,669
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 3,494
Annual Return 2016 rr_AnnualReturn2016 17.41%
Highest Quarterly Return, Label rr_HighestQuarterlyReturnLabel Best Quarter:
Highest Quarterly Return, Date rr_BarChartHighestQuarterlyReturnDate Jun. 30, 2016
Highest Quarterly Return rr_BarChartHighestQuarterlyReturn 7.03%
Lowest Quarterly Return, Label rr_LowestQuarterlyReturnLabel Worst Quarter:
Lowest Quarterly Return, Date rr_BarChartLowestQuarterlyReturnDate Dec. 31, 2016
Lowest Quarterly Return rr_BarChartLowestQuarterlyReturn (1.07%)
Label rr_AverageAnnualReturnLabel Return before taxes
1 Year rr_AverageAnnualReturnYear01 17.41%
Since Inception rr_AverageAnnualReturnSinceInception 8.05%
Inception Date rr_AverageAnnualReturnInceptionDate Jul. 13, 2015
Global X Funds | Global X SuperDividend Alternatives ETF | Global X SuperDividend Alternatives ETF | After Taxes on Distributions  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions
1 Year rr_AverageAnnualReturnYear01 13.23% [9]
Since Inception rr_AverageAnnualReturnSinceInception 4.32% [9]
Global X Funds | Global X SuperDividend Alternatives ETF | Global X SuperDividend Alternatives ETF | After Taxes on Distributions and Sales  
Prospectus: rr_ProspectusTable  
Label rr_AverageAnnualReturnLabel Return after taxes on distributions and sale of Fund Shares
1 Year rr_AverageAnnualReturnYear01 9.72% [9]
Since Inception rr_AverageAnnualReturnSinceInception 4.46% [9]
Global X Funds | Global X FinTech Thematic ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X FinTech ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X FinTech ETF (formerly, Global X FinTech Thematic ETF) (“Fund”) seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the INDXX Global Fintech Thematic Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. From the Fund's commencement of operations on September 12, 2016 to the end of the most recent fiscal period, the Fund’s portfolio turnover rate was 0.00% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its total assets in the securities of the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed.

The Underlying Index is designed to provide exposure to exchange-listed companies in developed markets that provide financial technology products and services, including companies involved in mobile payments, peer-to-peer (P2P) and marketplace lending, financial analytics software and alternative currencies (collectively, “FinTech Companies”), as defined by INDXX, the provider of the Underlying Index.

The eligible universe of the Underlying Index includes among the most liquid and investable companies in accordance with the standard market capitalization and liquidity criteria associated with developed markets, as defined by the Index Provider. As of July 1, 2016, companies must have a minimum market capitalization of $100 million and a minimum average daily turnover for the last 6 months greater than or equal to $2 million in order to be eligible for inclusion in the Underlying Index. As of July 1, 2016, components from the following countries were eligible for inclusion in the Underlying Index: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, South Korea, the United Kingdom and the United States.

From the eligible universe, the Index Provider identifies FinTech Companies by applying a proprietary analysis that consists of two primary components: theme identification and company analysis. As part of the theme identification process, the Index Provider analyzes industry reports, investment research and consumer data related to the fintech industry in order to establish the themes that are expected to provide the most exposure to the growth of the fintech industry. As of July 1, 2016, the Index Provider has identified the following six fintech themes: (1) Mobile Payments (2) Peer-to-Peer (P2P) and Marketplace Lending, (3) Enterprise Solutions, (4) Blockchain and Alternative Currencies, (5) Crowdfunding and (6) Personal Finance Software and Automated Wealth Management/Trading (collectively, “FinTech Themes”). In order to be included in the Underlying Index, a company must be identified as having significant exposure to one of these FinTech Themes. In the second step of the process, companies are analyzed based on two primary criteria: revenue exposure and primary business operations. A company is deemed to have significant exposure to one of the FinTech Themes if (i) according to a public filing, it generates a majority of its revenue from one of the FinTech Themes, or (ii) it has stated its primary business to be in products and services focused on one of the FinTech Themes. Accordingly, the Fund assets will be concentrated (that is, it will hold 25% or more of its total assets) in companies that provide exposure to the fintech industry.

The Underlying Index is weighted according to a modified capitalization weighting methodology and is reconstituted and rebalanced annually. At the annual rebalance, a capping methodology is applied to reduce concentration in individual securities and increase diversification of the Underlying Index. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include financial and information technology companies. The Fund's investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Information Technology sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Information Technology sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.

Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund’s investments are concentrated in the information technology sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Information Technology Sector.

Currency Risk: The Fund may invest in securities denominated in foreign currencies. Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if the relevant foreign currencies depreciate against the U.S. dollar.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.

Geographic Risk: A natural 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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.

Risk of Investing in Developed Countries: The Fund’s investment in developed country issuers may subject the Fund to regulatory, political, currency, security, and economic risks specific to developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some other countries. A majority of developed countries have recently experienced a significant economic slowdown. In addition, developed countries may be impacted by changes to the economic health of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities.


Risks Related to Investing in Fintech Companies: Fintech companies may be adversely impacted by government regulations, economic conditions and deterioration in credit markets. These companies may have significant exposure to consumers and businesses (especially small businesses) in the form of loans and other financial products or services. Fintech companies typically face intense competition and potentially rapid product obsolescence. In addition, many Fintech companies store sensitive consumer information and could be the target of cybersecurity attacks and other types of theft, which could have a negative impact on these companies. Many fintech companies currently operate under less regulatory scrutiny than traditional financial services companies and banks, but there is significant risk that regulatory oversight could increase in the future. Higher levels of regulation could increase costs and adversely impact the current business models of some fintech companies. These companies could be negatively impacted by disruptions in service caused by hardware or software failure, or by interruptions or delays in service by third-party data center hosting facilities and maintenance providers. Fintech companies involved in alternative currencies may face slow adoption rates and be subject to higher levels of regulatory scrutiny in the future, which could severely impact the viability of these companies. Fintech companies, especially smaller companies, tend to be more volatile than companies that do not rely heavily on technology.

Risk Related to Investing in the Financials Sector: 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.

Risks Related to Investing in the Information Technology Sector: Information technology companies may have limited product lines, markets, financial resources or personnel. Information technology companies typically 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.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Global X Funds | Global X FinTech Thematic ETF | Global X FinTech Thematic ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol FINX
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.68%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 69
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 218
Global X Funds | Global X Internet of Things Thematic ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Internet of Things ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Internet of Things ETF (formerly, Global X Internet of Things Thematic ETF) (“Fund”) seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the INDXX Global Internet of Things Thematic Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. From the Fund's commencement of operations on September 12, 2016 to the end of the most recent fiscal period, the Fund’s portfolio turnover rate was 0.39% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 0.39%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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:
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 69
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 218
Strategy [Heading] rr_StrategyHeading PRINCIPAL INVESTMENT STRATEGIES
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock
The Fund invests at least 80% of its total assets in the securities of the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed.

The Underlying Index is designed to provide exposure to exchange-listed companies in developed markets that facilitate the Internet of Things industry, including companies involved in wearable technology, home automation, connected automotive technology, sensors, networking infrastructure/software, smart metering and energy control devices (collectively, “Internet of Things Companies”), as defined by INDXX, the provider of the Underlying Index. The Internet of Things refers to the network of physical objects (devices, vehicles, equipment, homes, buildings) that are connected to the internet through embedded devices and software, which allows these physical objects to collect, analyze and exchange data.

The eligible universe of the Underlying Index includes among the most liquid and investable companies in accordance with the standard market capitalization and liquidity criteria associated with developed markets, as defined by the Index Provider. As of July 1, 2016, companies must have a minimum market capitalization of $100 million and a minimum average daily turnover for the last 6 months greater than or equal to $2 million in order to be eligible for inclusion in the Underlying Index. As of July 1, 2016, components from the following countries were eligible for inclusion in the Underlying Index: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, South Korea, the United Kingdom and the United States.

From the eligible universe, the Index Provider identifies Internet of Things Companies by applying a proprietary analysis that consists of two primary components: theme identification and company analysis. As part of the theme identification process, the Index Provider analyzes industry reports, investment research and consumer data related to the Internet of Things industry in order to establish the themes that are expected to provide the most exposure to the growth of the Internet of Things industry. As of July 1, 2016, the Index Provider has identified the following four Internet of Things themes: (1) Consumer IoT Technology (2) Equipment, Vehicle, and Infrastructure/Building Technology, (3) Semiconductors and Sensors and (4) Networking Infrastructure/Software (collectively, “Internet of Things Themes”). In order to be included in the Underlying Index, a company must be identified as having significant exposure to one of these Internet of Things Themes. In the second step of the process, companies are analyzed based on two primary criteria: revenue exposure and primary business operations. A company is deemed to have significant exposure to one of the Internet of Things Themes if (i) according to a public filing, it generates a majority of its revenue from one of the Internet of Things Themes, or (ii) it has stated its primary business to be in products and services focused on one of the Internet of Things Themes. In addition, companies with more diversified revenue streams may also be included in the Underlying Index if they meet the following criteria: (1) identified as being critical to the IoT ecosystem due to scale in certain IoT technologies and services, (2) have a distinct business unit(s) focused on IoT products and services and (3) have a core competency that is expected to benefit from increased adoption of IoT. Companies that meet these criteria are eligible for inclusion in the Underlying Index with a weighting cap of 2%. Accordingly, the Fund assets will be concentrated (that is, it will hold 25% or more of its total assets) in companies that provide products and services that provide exposure to the Internet of Things industry.

The Underlying Index is weighted according to a modified capitalization weighting methodology and is reconstituted and rebalanced annually. At the annual rebalance, a capping methodology is applied to reduce concentration in individual securities and increase diversification of the Underlying Index. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include industrials and information technology companies. The Fund's investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Information Technology sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Information Technology sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").
Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.

Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund’s investments are concentrated in the information technology sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Information Technology Sector.

Currency Risk: The Fund may invest in securities denominated in foreign currencies. Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if the relevant foreign currencies depreciate against the U.S. dollar.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Emerging Market Risk: The Fund is expected to invest in securities in emerging market countries. The Fund’s investment in an emerging market country may be subject to a greater risk of loss than investments in developed markets. Securities markets of emerging market countries are less liquid, subject to greater price volatility, have smaller market capitalizations, have less government regulation, and are not subject to as extensive and frequent accounting, financial, and other reporting requirements as the securities markets of more developed countries. Because certain securities markets in the emerging countries in which the Fund may invest are small in size, underdeveloped and are less regulated and less correlated to global economic cycles than those markets located in more developed countries, the securities markets in such countries are subject to greater risks associated with market volatility, lower market capitalization, lower trading volume, illiquidity, inflation, greater price fluctuations and uncertainty regarding the existence of trading markets.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.

Geographic Risk: A natural 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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.
Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.

Risk of Investing in Developed Countries: The Fund’s investment in developed country issuers may subject the Fund to regulatory, political, currency, security, and economic risks specific to developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some other countries. A majority of developed countries have recently experienced a significant economic slowdown. In addition, developed countries may be impacted by changes to the economic health of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities.

Risks Related to Investing in Internet of Things Companies: Internet of Things companies may have limited product lines, markets, financial resources or personnel. These companies typically face intense competition and potentially rapid product obsolescence. In addition, many Internet of Things companies store sensitive consumer information and could be the target of cybersecurity attacks and other types of theft, which could have a negative impact on these companies. As a result, Internet of Things companies may be adversely impacted by government regulations, and may be subject to additional regulatory oversight with regard to privacy concerns and cybersecurity risk. These companies are also heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. Internet of Things companies could be negatively impacted by disruptions in service caused by hardware or software failure, or by interruptions or delays in service by third-party data center hosting facilities and maintenance providers. Internet of Things companies, especially smaller companies, tend to be more volatile than companies that do not rely heavily on technology.

Risks Related to Investing in the Industrials Sector: Investments in securities of companies in the industrials sector are subject to fluctuations in supply and demand for their specific product or service. The products of manufacturing companies may face product obsolescence due to rapid technological developments. Government regulation, world events and economic conditions affect the performance of companies in the industrials sector. Companies also may be adversely affected by environmental damage and product liability claims.

Risks Related to Investing in the Information Technology Sector: Information technology companies may have limited product lines, markets, financial resources or personnel. Information technology companies typically 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.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Global X Funds | Global X Internet of Things Thematic ETF | Global X Internet of Things Thematic ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol SNSR
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [10]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.68%
Global X Funds | Global X Robotics & Artificial Intelligence Thematic ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Robotics & Artificial Intelligence ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Robotics & Artificial Intelligence ETF (formerly, Global X Robotics & Artificial Intelligence Thematic ETF) (“Fund”) seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the INDXX Global Robotics & Artificial Intelligence Thematic Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. From the Fund's commencement of operations on September 12, 2016 to the end of the most recent fiscal period, the Fund’s portfolio turnover rate was 0.00% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its total assets in the securities of the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed.

The Underlying Index is designed to provide exposure to exchange-listed companies in developed markets that are involved in the development of robotics and/or artificial intelligence, including companies involved in developing industrial robots and production systems, automated inventory management, unmanned vehicles, voice/image/text recognition, and medical robots or robotic instruments (collectively, “Robotics & Artificial Intelligence Companies”), as defined by INDXX, the provider of the Underlying Index.

The eligible universe of the Underlying Index includes among the most liquid and investable companies in accordance with the standard market capitalization and liquidity criteria associated with developed markets, as defined by the Index Provider. As of July 1, 2016, companies must have a minimum market capitalization of $100 million and a minimum average daily turnover for the last 6 months greater than or equal to $2 million in order to be eligible for inclusion in the Underlying Index. As of July 1, 2016, components from the following countries were eligible for inclusion in the Underlying Index: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, South Korea, the United Kingdom and the United States.

From the eligible universe, the Index Provider identifies Robotics & Artificial Intelligence Companies by applying a proprietary analysis that consists of two primary components: theme identification and company analysis. As part of the theme identification process, the Index Provider analyzes industry reports, investment research and consumer data related to the robotics and artificial intelligence industry in order to establish the themes that are expected to provide the most exposure to the growth of the robotics and artificial intelligence industry. As of July 1, 2016, the Index Provider has identified the following four robotics and artificial intelligence themes: (1) Industrial Robotics and Automation (2) Unmanned Vehicles and Drones, (3) Artificial Intelligence, (4) Non-Industrial Robotics (collectively, “Robotics & Artificial Intelligence Themes”). In order to be included in the Underlying Index, a company must be identified as having significant exposure to one of these Robotics & Artificial Intelligence Themes. In the second step of the process, companies are analyzed based on two primary criteria: revenue exposure and primary business operations. A company is deemed to have significant exposure to one of the Robotics & Artificial Intelligence Themes if (i) according to a public filing, it generates a majority of its revenue from one of the Robotics & Artificial Intelligence Themes, or (ii) it has stated its primary business to be in products and services focused on one of the Robotics & Artificial Intelligence Themes. Accordingly, the Fund assets will be concentrated (that is, it will hold 25% or more of its total assets) in companies that provide exposure to the robotics and artificial intelligence industry.

The Underlying Index is weighted according to a modified capitalization weighting methodology and is reconstituted and rebalanced annually. At the annual rebalance, a capping methodology is applied to reduce concentration in individual securities and increase diversification of the Underlying Index. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include industrials and information technology companies. The Fund's investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Industrials and Information Technology sectors.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Industrials and Information Technology sectors.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.

Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund’s investments are concentrated in the industrials and information technology sectors, the Fund will be susceptible to loss due to adverse occurrences affecting these sectors or industries. To the extent that the Underlying Index concentrates in the securities of issuers in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole. For additional details on these risks, please see Risks Related to Investing in Japan, Risks Related to Investing in the Industrials Sector, and Risks Related to Investing in the Information Technology Sector.

Currency Risk: The Fund may invest in securities denominated in foreign currencies. Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if the relevant foreign currencies depreciate against the U.S. dollar.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.

Geographic Risk: A natural 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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.
International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.

Risk of Investing in Developed Countries: The Fund’s investment in developed country issuers may subject the Fund to regulatory, political, currency, security, and economic risks specific to developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some other countries. A majority of developed countries have recently experienced a significant economic slowdown. In addition, developed countries may be impacted by changes to the economic health of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities.


Risks Related to Investing in Japan: The Japanese economy may be subject to considerable degrees of economic, political and social instability, which could have a negative impact on Japanese securities. Since the year 2000, Japan’s economic growth rate has remained relatively low, and it may remain low in the future. In addition, Japan is subject to the risk of natural disasters, such as earthquakes, volcanic eruptions, typhoons and tsunamis, which could negatively affect the Fund.

Risks Related to Investing in Robotics & Artificial Intelligence Companies: Robotics and artificial intelligence companies may have limited product lines, markets, financial resources or personnel. These companies typically face intense competition and potentially rapid product obsolescence. These companies are also heavily dependent on intellectual property rights and may be adversely affected by loss or impairment of those rights. There can be no assurance these companies will be able to successfully protect their intellectual property to prevent the misappropriation of their technology, or that competitors will not develop technology that is substantially similar or superior to such companies’ technology. Robotics and artificial intelligence companies typically engage in significant amounts of spending on research and development, and there is no guarantee that the products or services produced by these companies will be successful. Robotics and artificial intelligence companies, especially smaller companies, tend to be more volatile than companies that do not rely heavily on technology.

Risks Related to Investing in the Industrials Sector: Investments in securities of companies in the industrials sector are subject to fluctuations in supply and demand for their specific product or service. The products of manufacturing companies may face product obsolescence due to rapid technological developments. Government regulation, world events and economic conditions affect the performance of companies in the industrials sector. Companies also may be adversely affected by environmental damage and product liability claims.

Risks Related to Investing in the Information Technology Sector: Information technology companies may have limited product lines, markets, financial resources or personnel. Information technology companies typically 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.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Global X Funds | Global X Robotics & Artificial Intelligence Thematic ETF | Global X Robotics & Artificial Intelligence Thematic ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol BOTZ
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [11]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.68%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 69
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 218
Global X Funds | Global X Health & Wellness Thematic ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Health & Wellness Thematic ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Health & Wellness Thematic ETF (“Fund”) seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the INDXX Global Health & Wellness Thematic Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. From the Fund's commencement of operations on May 9, 2016 to the end of the most recent fiscal period, the Fund’s portfolio turnover rate was 0.00% of the average value of its portfolio.

Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests more than 80% of its total assets in the securities of the Underlying Index and in American Depositary Receipts ("ADRs") and Global Depositary Receipts ("GDRs") based on the securities in the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed.

The Underlying Index is designed to provide exposure to exchange-listed companies in developed markets that provide products and services that facilitate physical wellness through active and healthy lifestyles, including but not limited to companies involved in fitness equipment, fitness technology, athletic apparel, nutritional supplements, and organic/natural food offerings, (collectively, “Health & Wellness Companies”), as defined by INDXX, the provider of the Underlying Index ("Index Provider").

The eligible universe of the Underlying Index includes the most liquid and investable companies in accordance with the standard market capitalization and liquidity criteria associated with developed markets, as defined by the Index Provider. As of April 15, 2016, companies must have a minimum market capitalization of $500 million and a minimum average daily turnover for the last 6 months greater than or equal to $2 million in order to be eligible for inclusion in the Underlying Index. The Underlying Index may include components from the following countries: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, South Korea, the United Kingdom and the United States.

From the eligible universe, the Index Provider identifies Health & Wellness Companies by applying a proprietary analysis that consists of two primary components: theme identification and company analysis. As of April 15, 2016, the Index Provider has identified the following five themes that are expected to provide the most exposure to Health & Wellness Companies: (1) Healthy Food, Nutrition and Weight Loss, (2) Fitness and Fitness Apparel, (3) Nutritional Supplements and Preventive Health Care, (4) Anti-Aging and (5) Wellness (collectively, “Health & Wellness Themes”). In order to be included in the Underlying Index, a company must be identified as having significant exposure to one of these Health & Wellness Themes. The Index Provider analyzes companies based on two primary criteria: revenue exposure and primary business operations. A company is to have significant exposure to one of the Health & Wellness Themes if (i), according to a public filing, it generates a majority of its revenue from the sale of products or services from one of the Health & Wellness Themes, (ii), in the absence of a revenue segment breakdown, it has stated its primary business to be in products and services focused on one of the Health & Wellness Themes. Accordingly, the Fund assets will be concentrated (that is, it will hold 25% or more of its total assets) in companies that provide products and services that facilitate physical health and wellness.

The Underlying Index is weighted according to a modified capitalization weighting methodology and is reconstituted and rebalanced annually. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include consumer discretionary, consumer staples, health care and information technology companies. The Fund's investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Consumer Discretionary and Consumer Staples sectors.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Consumer Discretionary and Consumer Staples sectors.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.

Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund’s investments are concentrated in the consumer discretionary and consumer staples sectors, the Fund will be susceptible to loss due to adverse occurrences affecting these sectors or industries. To the extent that the Underlying Index concentrates in the securities of issuers in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Consumer Discretionary Sector and Risks Related to Investing in the Consumer Staples Sector.

Currency Risk: Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if currencies of the underlying securities depreciate against the U.S. dollar.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Emerging Market Risk: The Fund is expected to invest in securities in emerging market countries. The Fund’s investment in an emerging market country may be subject to a greater risk of loss than investments in developed markets. Securities markets of emerging market countries are less liquid, subject to greater price volatility, have smaller market capitalizations, have less government regulation, and are not subject to as extensive and frequent accounting, financial, and other reporting requirements as the securities markets of more developed countries. Because certain securities markets in the emerging countries in which the Fund may invest are small in size, underdeveloped and are less regulated and less correlated to global economic cycles than those markets located in more developed countries, the securities markets in such countries are subject to greater risks associated with market volatility, lower market capitalization, lower trading volume, illiquidity, inflation, greater price fluctuations and uncertainty regarding the existence of trading markets.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Security Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.

Geographic Risk: A natural 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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Investable Universe of Companies Risk: The investable universe of companies in which the Fund may invest may be limited. If a company no longer meets the Index Provider’s criteria for inclusion in the Underlying Index, the Fund may need to reduce or eliminate its holdings in that company. The reduction or elimination of the Fund’s holdings in the company may have an adverse impact on the liquidity of the Fund’s overall portfolio holdings and on Fund performance.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.

Risks Related to Investing in Health & Wellness Companies: The Fund invests in health and wellness companies, including companies that operate gyms and fitness/wellness facilities as well as companies that provide, manufacture or distribute natural/organic foods, sports/fitness equipment, wearable fitness technology, fitness/athletic apparel, nutritional supplements, anti-aging products and dietary services. The risks related to investing in such companies include rapid changes in consumer trends, social trends, marketing campaigns, and consumers’ disposable income. In addition, these companies typically face intense competition domestically and abroad, which could adversely impact the success of these companies.

Risks Related to Investing in the Consumer Discretionary Sector: 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.

Risks Related to Investing in the Consumer Staples Sector: The consumer staples sector may be affected by marketing campaigns, changes in consumer demands, government regulations and changes in commodity prices.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Global X Funds | Global X Health & Wellness Thematic ETF | Global X Health & Wellness Thematic ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol BFIT
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.68%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.18%) [12]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.50%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 51
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 199
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 361
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 830
Global X Funds | Global X Longevity Thematic ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Longevity Thematic ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Longevity Thematic ETF (“Fund”) seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the INDXX Global Longevity Thematic Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. From the Fund's commencement of operations on May 9, 2016 to the end of the most recent fiscal period, the Fund’s portfolio turnover rate was 2.76% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 2.76%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests more than 80% of its total assets in the securities of the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed. 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 designed to provide exposure to exchange-listed companies in developed markets that facilitate the demographic trend of longer average life spans and the aging of the global population, including but not limited to companies involved in biotechnology, medical devices, pharmaceuticals, senior living facilities and specialized health care services (collectively, “Longevity Companies”), as defined by INDXX, the provider of the Underlying Index.

The eligible universe of the Underlying Index includes the most liquid and investable companies in accordance with the standard market capitalization and liquidity criteria associated with developed markets, as defined by the Index Provider. As of April 15, 2016, companies must have a minimum market capitalization of $500 million and a minimum average daily turnover for the last 6 months greater than or equal to $2 million in order to be eligible for inclusion in the Underlying Index. The Underlying Index may include components from the following countries: Australia, Austria, Belgium, Canada, Denmark, Finland, France, Germany, Hong Kong, Ireland, Israel, Italy, Japan, Netherlands, New Zealand, Norway, Portugal, Singapore, Spain, Sweden, Switzerland, South Korea, the United Kingdom and the United States.

From the eligible universe, the Index Provider identifies Longevity Companies by applying a proprietary analysis that consists of two primary components: theme identification and company analysis. As of April 15, 2016, the Index Provider has identified the following five themes that are expected to provide the most exposure to Longevity Companies: (1) Health Care Products (2) Health Care Services, (3) Medical Devices, and (4) Senior Homes (collectively, “Longevity Themes”). In order to be included in the Underlying Index, a company must be identified as having significant exposure to one of these Longevity Themes. Companies are analyzed based on two primary criteria: revenue exposure and primary business operations. A company is deemed to have significant exposure to one of the Longevity Themes if (i), according to a public filing, it generates a majority of its revenue from one of the Longevity Themes, (ii), in the absence of a revenue segment breakdown, it has stated its primary business to be in products and services focused on one of the Longevity Themes. Accordingly, the Fund assets will be concentrated (that is, it will hold 25% or more of its total assets) in companies that provide products and services that facilitate the aging of the global population.
  
The Underlying Index is weighted according to a modified capitalization weighting methodology and is reconstituted and rebalanced annually. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include health care, biotechnology and pharmaceuticals companies as well as real estate investment trusts (“REITs”). The Fund's investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Healthcare, Biotechnology, and Medical Device sectors.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Healthcare, Biotechnology, and Medical Device sectors.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.

Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund’s investments are concentrated in the healthcare, biotechnology, and medical device sectors, the Fund will be susceptible to loss due to adverse occurrences affecting these sectors or industries. To the extent that the Underlying Index concentrates in the securities of issuers in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Healthcare Sector, Risks Related to Investing in the Biotechnology Sector, Risks Related to Investing in the Medical Device Sector, and Risks Related to Investing in the Pharmaceutical Sector.

Currency Risk: The Fund may invest in securities denominated in foreign currencies. Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if the relevant foreign currencies depreciate against the U.S. dollar.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.

Geographic Risk: A natural 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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

International Closed Market Trading Risk: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.

Risk of Investing in Developed Countries: The Fund’s investment in developed country issuers may subject the Fund to regulatory, political, currency, security, and economic risks specific to developed countries. Developed countries tend to represent a significant portion of the global economy and have generally experienced slower economic growth than some other countries. A majority of developed countries have recently experienced a significant economic slowdown. In addition, developed countries may be impacted by changes to the economic health of certain key trading partners, regulatory burdens, debt burdens and the price or availability of certain commodities.
 
Risks Related to Investing in Longevity Companies: The Fund invests in longevity companies, including pharmaceutical and biotechnology companies involved in the research, development, production and/or manufacturing of drugs; suppliers or manufacturers of medical devices; companies operating skilled nursing homes, senior living homes and continuing care communities; and providers of health care services, including home healthcare providers. Longevity companies may be affected by industry competition, dependency on a limited number of products, obsolescence of products, government approvals and regulations, loss or impairment of intellectual property rights and litigation regarding product liability. Longevity companies may be affected by government regulations and government healthcare programs, as well as increases or decreases in the cost of medical products and services and product liability claims. Many longevity companies are heavily dependent on patent protection, and the expiration of a company’s patent may adversely affect that company’s profitability.

Risks Related to Investing in Real Estate Stocks and Real Estate Investment Trusts ("REIT"): The Fund may have exposure to companies that invest in real estate, such as REITs, which exposes investors in the Fund to the risks of owning real estate directly, as well as to risks that relate specifically to the way in which real estate companies are organized and operated. Real estate is highly sensitive to general and local economic conditions and developments, and characterized by intense competition and periodic overbuilding. Many real estate companies, including REITs, utilize leverage (and some may be highly leveraged), which increases risk and could adversely affect a real estate company's operations and market value in periods of rising interest rates. Mortgage REITs are also exposed to credit risk, interest rate risk, and prepayment risk.

Risks Related to Investing in the Biotechnology Sector: Biotechnology companies face intense competition and the potential for rapid product obsolescence. Biotechnology companies may be adversely affected by the loss or impairment of intellectual property rights or changes in government regulations.

Risks Related to Investing in the Healthcare Sector: The healthcare sector may be affected by government regulations and government healthcare programs, increases or decreases in the cost of medical products and services and product liability claims, among other factors. Many healthcare companies are heavily dependent on patent protection, and the expiration of a company’s patent may adversely affect that company’s profitability. Healthcare companies are subject to competitive forces that may result in price discounting, and may be thinly capitalized and susceptible to product obsolescence.

Risks Related to Investing in the Medical Device Sector: Companies in the medical equipment industry may be affected by the expiration of patents, litigation based on product liability, industry competition, product obsolescence and regulatory approvals, among other factors.

Risks Related to Investing in the Pharmaceutical Sector: Companies in the pharmaceuticals industry may be affected by industry competition, dependency on a limited number of products, obsolescence of products, government approvals and regulations, loss or impairment of intellectual property rights and litigation regarding product liability.

Securities Lending Risk: Securities lending involves a risk of loss because the borrower may fail to return the securities in a timely manner or at all. If the Fund is not able to recover the securities loaned, it may sell the collateral and purchase a replacement security in the market. Lending securities entails a risk of loss to the Fund if and to the extent that the market value of the loaned securities increases and the collateral is not increased accordingly. Additionally, the Fund will bear any loss on the investment of cash collateral it receives. These events could also trigger adverse tax consequences for the Fund. As securities on loan may not be voted by the Fund, there is a risk that the Fund may not be able to recall the securities in sufficient time to vote on material proxy matters.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Global X Funds | Global X Longevity Thematic ETF | Global X Longevity Thematic ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol LNGR
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.68%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.18%) [13]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.50%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 51
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 199
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 361
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 830
Global X Funds | Global X Millennials Thematic ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Millennials Thematic ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Millennials Thematic ETF (“Fund”) seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the INDXX Millennials Thematic Index (“Underlying Index”).

Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.

Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. From the Fund's commencement of operations on May 4, 2016 to the end of the most recent fiscal period, the Fund’s portfolio turnover rate was 0.00% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate none
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests more than 80% of its total assets in the securities of the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed. 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 designed to measure the performance of U.S. listed companies that provide exposure to the millennial generation, (collectively, “Millennial Companies”), as defined by INDXX, the provider of the Underlying Index ("Index Provider"). The millennial generation refers to the demographic cohort in the U.S. with birth years ranging from 1980 to 2000.

The eligible universe of the Underlying Index includes the most liquid and investable companies in accordance with the standard market capitalization and liquidity criteria associated with developed markets, as defined by the Index Provider. As of April 15, 2016, companies must have a minimum market capitalization of $500 million and a minimum average daily turnover for the last 6 months greater than or equal to $2 million in order to be eligible for inclusion in the Underlying Index. The Underlying Index only includes companies listed in the United States. The Underlying Index is developed using a proprietary, multi-step research process to identify Millennial Companies. First, the Index Provider conducts fundamental research on trends related to the millennial generation, including but not limited to: consumer spending data, consumer behavior, technology and demographics. Based on this analysis, the Index Provider determines key categories that appear to be most reflective of how individuals from the millennial generation spend their time and money (collectively, “Spending Categories”). As of April 15, 2016, the Index Provider has identified the following eight key Spending Categories for millennials: (1) Social and Entertainment, (2) Clothing and Apparel, (3) Travel and Mobility, (4) Food/Restaurants and Consumer Staples, (5), Financial Services and Investments, (6) Housing and Home Goods, (7) Education and Employment, and (8) Health and Fitness. These Spending Categories may change over time.

After establishing these Spending Categories, the Index Provider uses a variety of sources - including, but not limited to: industry reports, investment research and financial statements published by companies - to identify companies with significant exposure to these Spending Categories. A company is determined to have significant exposure to a Spending Category if, (i) according to a public filing, it generates a majority of its revenue from one of the Spending Categories, (ii), in the absence of a revenue segment breakdown, it has stated its primary business to be in products and services focused on one of the Spending Categories. The companies identified at this stage are then considered for further analysis, which ultimately determines their eligibility for inclusion in the Underlying Index.

In the final step of the selection process, the Index Provider conducts a composite analysis on the remaining companies to identify Millennial Companies within each of the Spending Categories. As part of this process, the Index Provider utilizes the fundamental research it has conducted on trends related to the millennial generation in order to evaluate companies based on quantitative and qualitative criteria that have been identified as being consistent with millennial demographics and consumer preferences. As of April 15, 2016, some examples of the criteria used in the evaluation process include but are not limited to Ecommerce, social and professional networks, digital media streaming services, athletic and outdoor apparel, multi-family apartments, and peer reviews/recommendations. The Index Provider then scores the companies based on these criteria to determine the companies that are most reflective of Millennial Companies within each Spending Category. These criteria will vary by Spending Category and are subject to evaluation on an annual basis. A minimum of five and a maximum of fifteen companies from each Spending Category are included in the Underlying Index, primarily based on their score in the composite analysis.

The Underlying Index is weighted according to a modified capitalization weighting methodology and is reconstituted and rebalanced annually. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include consumer discretionary, consumer staples, information technology and financial services companies as well as real estate investment trusts (“REITs”). The Fund's investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Consumer Discretionary and Information Technology sectors.

Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Consumer Discretionary and Information Technology sectors.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.

Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund’s investments are concentrated in the consumer discretionary and information technology sectors, the Fund will be susceptible to loss due to adverse occurrences affecting these sectors or industries. To the extent that the Underlying Index concentrates in the securities of issuers in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Consumer Discretionary Sector and Risks Related to Investing in the Information Technology Sector.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Management Risk: The Fund is subject to the risk that the Adviser’s investment management strategy may cause the Fund to underperform the market or its relevant benchmark or adversely affect the ability of the Fund to achieve its investment objective.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.

Risks Related to Investing in Millennial Companies: The Fund invests in millennial companies, including companies involved in producing or distributing clothing and apparel, food (including restaurants), and consumer staples, as well as companies involved in the provision of social networks and social media, digital media, live events and entertainment, travel and transportation services, financial services and investments, housing and housing services and educational services. Millennial companies may be affected by changes in consumers’ disposable income, consumer preferences, social trends and marketing campaigns. Millennial companies generally face a high degree of competition and potentially rapid product obsolescence.

Risks Related to Investing in Real Estate Stocks and Real Estate Investment Trusts ("REITs"): The Fund may have exposure to companies that invest in real estate, such as REITs, which exposes investors in the Fund to the risks of owning real estate directly, as well as to risks that relate specifically to the way in which real estate companies are organized and operated. Real estate is highly sensitive to general and local economic conditions and developments, and characterized by intense competition and periodic overbuilding. Many real estate companies, including REITs, utilize leverage (and some may be highly leveraged), which increases risk and could adversely affect a real estate company's operations and market value in periods of rising interest rates. Mortgage REITs are also exposed to credit risk, interest rate risk, and prepayment risk.

Risks Related to Investing in the Consumer Discretionary Sector: 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.

Risks Related to Investing in the Information Technology Sector: Information technology companies may have limited product lines, markets, financial resources or personnel. Information technology companies typically 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.

Securities Lending Risk: Securities lending involves a risk of loss because the borrower may fail to return the securities in a timely manner or at all. If the Fund is not able to recover the securities loaned, it may sell the collateral and purchase a replacement security in the market. Lending securities entails a risk of loss to the Fund if and to the extent that the market value of the loaned securities increases and the collateral is not increased accordingly. Additionally, the Fund will bear any loss on the investment of cash collateral it receives. These events could also trigger adverse tax consequences for the Fund. As securities on loan may not be voted by the Fund, there is a risk that the Fund may not be able to recall the securities in sufficient time to vote on material proxy matters.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.
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 The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Global X Funds | Global X Millennials Thematic ETF | Global X Millennials Thematic ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol MILN
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.68%
Fee Waiver or Reimbursement rr_FeeWaiverOrReimbursementOverAssets (0.18%) [14]
Net Expenses (as a percentage of Assets) rr_NetExpensesOverAssets 0.50%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 51
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 199
Expense Example, with Redemption, 5 Years rr_ExpenseExampleYear05 361
Expense Example, with Redemption, 10 Years rr_ExpenseExampleYear10 $ 830
Global X Funds | Global X Conscious Companies ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Conscious Companies ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Conscious Companies ETF (“Fund”) seeks to provide investment results that correspond generally to the price and yield performance, before fees and expenses, of the Concinnity Conscious Companies Index (“Underlying Index”).

Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. From the Fund's commencement of operations on July 11, 2016 to the end of the most recent fiscal period, the Fund’s portfolio turnover rate was 37.35% of the average value of its portfolio.
Portfolio Turnover, Rate rr_PortfolioTurnoverRate 37.35%
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its total assets in the securities of the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed.

The Underlying Index is designed to provide exposure to companies listed in the U.S. that operate their businesses in a sustainable and responsible manner, as measured by their ability to achieve positive outcomes that are consistent with a multi-stakeholder operating system (“MsOS”), as defined by Concinnity Advisors LP, the provider of the Underlying Index. The MsOS is a corporate governance structure that seeks to account for the multiple stakeholders that are critical for the ongoing success of the business, and incorporate the considerations of these stakeholders into the corporate decision-making and problem-solving process. The Index Provider conducts its analysis based on the following five key stakeholder groups: (1) Customers, (2) Employees, (3) Suppliers, (4) Stock and Debt Holders, and (5) Communities in which the companies operate.

The universe of companies eligible for inclusion in the Underlying Index is comprised of companies listed in the U.S. with a market capitalization greater than $2 billion. From this initial universe, the Index Provider applies a proprietary, three-step analysis to select companies for the Underlying Index. In the first step, the Index Provider utilizes approximately forty information sources and public rankings to identify and evaluate companies based on their demonstrated ability to achieve positive outcomes across all five stakeholder groups. Positive outcomes vary by stakeholder group, but include metrics that assess areas such as employee productivity, customer loyalty and corporate governance. These information sources are vetted annually and evaluated based on stakeholder focus, research methodology and third party or in-house analysis of a source’s potential as a leading indicator of corporate and/or stock performance. Companies are scored based on their appearance and performance in these sources and rankings. Of the approximately 1,100 - 1,400 companies that typically make up the eligible universe, approximately 600-700 are generally selected for further analysis and potential inclusion in the Underlying Index.

In the second step of the research process, the Index Provider uses a composite analysis to apply a deeper evaluation on the remaining companies. The composite analysis is a process that assesses various MsOS criteria by combining ratings data from multiple research entities that specialize in various stakeholder assessment categories. Companies are evaluated through a series of scoring lenses that combine to form a composite score, which is underpinned by several hundred MsOS criteria. Composite analysis MsOS criteria include, but are not limited to: employee engagement, executive integrity, customer relationship quality, labor and human rights, and quality of financial reporting. Various modeling techniques are then used to combine qualitative and quantitative data into a single score for each company. This score reflects the degree to which a company operates its business using the MsOS approach, as defined by the research process. The approximately 300-350 highest scoring companies ultimately comprise the MsOS investable universe for the purposes of constructing the Underlying Index.

In the final step, a screen for consistent achievement is applied to the MsOS investable universe of the approximately 300-350 highest scoring companies. In order to be included in the Underlying Index, a company must have qualified for inclusion in the MsOS investable universe for at least three consecutive years. The Underlying Index is equal-weighted. The Underlying Index may include large- or mid-capitalization companies, and will generally provide exposure to all major sectors. As of December 30, 2016, the Underlying Index had 132 constituents, with no single sector having an allocation greater than 25%. The three largest sectors represented in the Underlying Index as of December 30, 2016, were Consumer Discretionary, Industrials and Information Technology. The Fund’s investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was not concentrated in any sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was not concentrated in any sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.
Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: To the extent that the Underlying Index concentrates in the securities of issuers in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Geographic Risk: A natural 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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Large-Capitalization Companies Risk: Large-capitalization companies may trail the returns of the overall stock market. Large-capitalization stocks tend to go through cycles of doing better - or worse - than the stock market in general. These periods have, in the past, lasted for as long as several years.

Management Risk: The Fund is subject to the risk that the Adviser’s investment management strategy may cause the Fund to underperform the market or its relevant benchmark or adversely affect the ability of the Fund to achieve its investment objective.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Operational Risk: The Fund is exposed to operational risk arising from a number of factors, including but not limited to human error, processing and communication errors, errors of the Fund's service providers, counterparties or other third-parties, failed or inadequate processes and technology or systems failures. The Fund and the Adviser seek to reduce these operational risks through controls and procedures. However, these measures do not address every possible risk and may be inadequate for those risks that they are intended to address.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.

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
The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund does not have a full calendar year of performance. Thus, no bar chart or Average Annual Total Returns table is included for the Fund.
Global X Funds | Global X Conscious Companies ETF | Global X Conscious Companies ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol KRMA
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.43%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none [15]
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.43%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 44
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 138
Global X Funds | Global X Education Thematic ETF  
Prospectus: rr_ProspectusTable  
Risk/Return [Heading] rr_RiskReturnHeading Global X Education Thematic ETF
Objective [Heading] rr_ObjectiveHeading INVESTMENT OBJECTIVE
Objective, Primary [Text Block] rr_ObjectivePrimaryTextBlock
The Global X Education Thematic ETF (“Fund”) seeks investment results that correspond generally to the price and yield performance, before fees and expenses, of the INDXX Global Education Thematic Index (“Underlying Index”).
Expense [Heading] rr_ExpenseHeading FEES AND EXPENSES
Expense Narrative [Text Block] rr_ExpenseNarrativeTextBlock
This table describes the fees and expenses that you may pay if you buy and hold shares (“Shares”) of the Fund. You will also incur usual and customary brokerage commissions when buying and selling Shares.
Operating Expenses Caption [Text] rr_OperatingExpensesCaption Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Portfolio Turnover [Heading] rr_PortfolioTurnoverHeading Portfolio Turnover:
Portfolio Turnover [Text Block] rr_PortfolioTurnoverTextBlock
The Fund pays 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 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. The Fund had not yet commenced investment operations as of the most recent fiscal year end. Thus, no portfolio turnover rate is provided for the Fund.
Expense Exchange Traded Fund Commissions [Text] rr_ExpenseExchangeTradedFundCommissions You will also incur usual and customary brokerage commissions when buying and selling Shares.
Expense Example [Heading] rr_ExpenseExampleHeading Example:
Expense Example Narrative [Text Block] rr_ExpenseExampleNarrativeTextBlock
The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. This example does not take into account customary brokerage commissions that you pay when purchasing or selling Shares of the Fund in the secondary market.
Expense Example by, Year, Caption [Text] rr_ExpenseExampleByYearCaption 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 invests at least 80% of its total assets in the securities of the Underlying Index and in American Depositary Receipts ("ADRs") and Global Depositary Receipts ("GDRs") based on the securities in the Underlying Index. The Fund’s 80% investment policy is non-fundamental and requires 60 days’ prior written notice to shareholders before it can be changed.

The objective of the Underlying Index is to provide exposure to exchange-listed companies globally that provide educational products and services, including companies involved in online learning and educational content/publishing, as well as early childhood education, higher education and professional education, (collectively, “Education Companies”), as defined by INDXX, the provider of the Underlying Index ("Index Provider").

The eligible universe of the Underlying Index includes among the most liquid and investable companies in accordance with the market capitalization and liquidity criteria associated with developed and emerging markets, as defined by the Index Provider. As of July 1, 2016, companies must have a minimum market capitalization of $100 million and a minimum average daily turnover for the last 6 months greater than or equal to $2 million in order to be eligible for inclusion in the Underlying Index. As of July 1, 2016, components from the following countries were eligible for inclusion in the Underlying Index: Australia, Austria, Belgium, Brazil, Canada, Chile, China, Colombia, Czech Republic, Denmark, Egypt, Finland, France, Germany, Greece, Hong Kong, Hungary, Indonesia, Ireland, Israel, Italy, Japan, Malaysia, Netherlands, New Zealand, Norway, Philippines, Poland, Portugal, Peru, Qatar, Russia, Singapore, South Africa, Spain, Sweden, Switzerland, South Korea, Thailand, Turkey, United Arab Emirates, the United Kingdom and the United States.

From the eligible universe, the Index Provider identifies Education Companies by applying a proprietary analysis that consists of two primary components: theme identification and company analysis. As part of the theme identification process, the Index Provider analyzes industry reports, investment research and consumer data related to the education industry in order to establish the themes that are expected to provide the most exposure to the growth of the education industry. As of July 1, 2016, the Index Provider has identified the following five education themes: (1) Educational Content/Publishing, (2) Online Learning, (3) Early Childhood Education, (4) Higher and Professional Education and (5) Education Finance, Housing and Services (collectively, “Education Themes”). In order to be included in the Underlying Index, a company must be identified as having significant exposure to one of these Education Themes. In the second step of the process, the Index Provider analyzes companies based on two primary criteria: revenue exposure and primary business operations. A company is identified as having significant exposure to one of the Education Themes if (i) according to a public filing, it generates a majority of its revenue from the sale of products or services from one of the Education Themes, or (ii) it has stated its primary business to be in products and services focused on one of the Education Themes. Accordingly, the Fund assets will be concentrated (that is, it will hold 25% or more of its total assets) in companies that provide exposure to the education industry.

The Underlying Index is weighted according to a modified capitalization weighting methodology and is reconstituted and rebalanced annually. At the annual rebalance, a capping methodology is applied to reduce concentration in individual securities and increase diversification of the Underlying Index. The Underlying Index may include large-, mid- or small-capitalization companies, and components primarily include consumer discretionary, financials and information technology companies. The Fund's investment objective and Underlying Index may be changed without shareholder approval.

The Underlying Index is sponsored by the Index Provider, which is an organization that is independent of the Fund and Global X Management Company LLC, the investment adviser for the Fund (“Adviser”). The Index Provider determines the relative weightings of the securities in the Underlying Index and publishes information regarding the market value of the Underlying Index.

The Adviser 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 outperform the Underlying Index and does not seek temporary defensive positions when markets decline or appear overvalued.

The Fund generally will use a replication strategy. A replication strategy is an indexing strategy that involves investing in the securities of the Underlying Index in approximately the same proportions as in the Underlying Index. However, the Fund may utilize a representative sampling strategy with respect to the Underlying Index when a replication strategy might be detrimental or disadvantageous to shareholders, such as when there are practical difficulties or substantial costs involved in compiling a portfolio of equity securities to replicate the Underlying Index, in instances in which a security in the Underlying Index becomes temporarily illiquid, unavailable or less liquid, or as a result of legal restrictions or limitations (such as tax diversification requirements) that apply to the Fund but not the Underlying Index.

The Adviser expects that, over time, the correlation between the Fund’s performance and that of the Underlying Index, before fees and expenses, will exceed 95%. A correlation percentage of 100% would indicate perfect correlation. If the Fund uses a replication strategy, it can be expected to have greater correlation to the Underlying Index than if it uses a representative sampling strategy.

The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Consumer Discretionary sector.
Strategy Portfolio Concentration [Text] rr_StrategyPortfolioConcentration The Fund concentrates its investments (i.e., holds 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. As of December 30, 2016, the Underlying Index was concentrated in the Consumer Discretionary sector.
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. There is no guarantee that the Fund will achieve its investment objective. The Fund is subject to the principal risks noted below, any of which may adversely affect the Fund's net asset value ("NAV"), trading price, yield, total return and ability to meet its investment objective, as well as other risks that are described in greater detail in the Additional Information About the Funds section of the Prospectus and in the Statement of Additional Information ("SAI").

Asset Class Risk: Securities in the Underlying Index or otherwise held in the Fund's portfolio may underperform in comparison to the general securities markets or other asset classes.


Assets Under Management Risk: From time to time an Authorized Participant, a third party investor, the Fund’s adviser or another affiliate of the Fund’s adviser or the Fund may invest in the Fund and hold its investment for a specific period of time in order to facilitate commencement of the Fund’s operations or for the Fund to achieve size or scale. There can be no assurance that any such entity would not redeem its investment or that the size of the Fund would be maintained at such levels which could negatively impact the Fund.

Authorized Participant Concentration Risk: The Fund has a limited number of financial institutions that may act as Authorized Participants. Only Authorized Participants who have entered into agreements with the Fund’s distributor may engage in creation or redemption transactions directly with the Fund. To the extent that those Authorized Participants exit the business or are unable to process creation and/or redemption orders, and no other Authorized Participant is able to step forward to create or redeem in either of those cases, Shares may be more likely to trade at a premium or discount to NAV, and possibly face trading halts and/or delisting from an exchange. The Authorized Participant Concentration Risk may be heightened because the Fund invests in non-U.S. securities.

Concentration Risk: Because the Fund’s investments are concentrated in the consumer discretionary sector, the Fund will be susceptible to loss due to adverse occurrences affecting this sector or industry. To the extent that the Underlying Index concentrates in the securities of issuers in a particular country, industry, market, asset class, or sector, the Fund will also concentrate its investments to approximately the same extent. By concentrating its investments in a country, industry, market, asset class, or sector, the Fund faces more risks than if it were diversified broadly over numerous countries, industries, markets, asset classes, or sectors. Such risks, any of which may adversely affect the companies in which the Fund invests, may include, but are not limited to, the following: general economic conditions or cyclical market patterns that could negatively affect supply and demand; competition for resources, adverse labor relations, political or world events; obsolescence of technologies; and increased competition or new product introductions that may affect the profitability or viability of companies in a particular country, industry, market, asset class, or sector. In addition, at times, such country, industry, market, asset class, or sector may be out of favor and underperform other similar categories or the market as a whole. For additional details on these risks, please see Risks Related to Investing in the Consumer Discretionary Sector.

Currency Risk: The Fund may invest in securities denominated in foreign currencies. Because the Fund's NAV is determined in U.S. dollars, the Fund's NAV could decline if the relevant foreign currencies depreciate against the U.S. dollar.

Custody Risk: Less developed markets are more likely to experience problems with the clearing and settling of trades.

Cyber Security Risk: Failures or breaches of the electronic systems of the Fund, the Adviser, and the Fund's other service providers, market makers, Authorized Participants or the issuers of securities in which the Fund invests have the ability to cause disruptions and negatively impact the Fund's business operations, potentially resulting in financial losses to the Fund and its shareholders. While the Fund has established business continuity plans and risk management systems seeking to address system breaches or failures, there are inherit limitations in such plans and systems. Furthermore, the Fund cannot control the cyber security plans and systems of the Fund's service providers, market makers, Authorized Participants or issuers of securities in which the Fund invests.

Emerging Markets Risk: The Fund is expected to invest in securities in emerging market countries. The Fund’s investment in an emerging market country may be subject to a greater risk of loss than investments in developed markets. Securities markets of emerging market countries are less liquid, subject to greater price volatility, have smaller market capitalizations, have less government regulation, and are not subject to as extensive and frequent accounting, financial, and other reporting requirements as the securities markets of more developed countries. Because certain securities markets in the emerging countries in which the Fund may invest are small in size, underdeveloped and are less regulated and less correlated to global economic cycles than those markets located in more developed countries, the securities markets in such countries are subject to greater risks associated with market volatility, lower market capitalization, lower trading volume, illiquidity, inflation, greater price fluctuations and uncertainty regarding the existence of trading markets.

Equity Securities Risk: Equity securities are subject to changes in value and their values may be more volatile than other asset classes, as a result of such factors as a company’s business performance, investor perceptions, stock market trends and general economic conditions.

Foreign Securities Risk: The Fund's investments in the securities of foreign issuers are subject to the risks associated with investing in those foreign markets, such as heightened risks of inflation or nationalization. In addition, securities of foreign issuers may lose value due to political, economic and geographic events affecting a foreign issuer or market. During periods of social, political or economic instability in a country or region, the value of a foreign security traded on United States’ exchanges, nonetheless, could be affected by, among other things, increasing price volatility, illiquidity, or the closure of the primary market on which the security is traded. The Fund may lose value due to political, economic and geographic events affecting a foreign issuer or market.
Geographic Risk: A natural 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 index data, index computations and/or 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 or at all, which may have an adverse impact on the Fund and its shareholders.

International Closed-Market Trading: Because the Fund’s investments may be traded in markets that are closed when the Exchange is open, there are likely to be deviations between the current value of an underlying investment and last sale pricing (i.e., the last quote from its closed foreign market), resulting in premiums or discounts to NAV that may be greater than those experienced by other exchange-traded funds.

Investable Universe of Companies Risk: The investable universe of companies in which the Fund may invest may be limited. If a company no longer meets the Index Provider’s criteria for inclusion in the Underlying Index, the Fund may need to reduce or eliminate its holdings in that company. The reduction or elimination of the Fund’s holdings in the company may have an adverse impact on the liquidity of the Fund’s overall portfolio holdings and on Fund performance.

Issuer Risk: Fund performance depends on the performance of individual companies in which the Fund invests. Changes to the financial condition of any of those companies may cause the value of their securities to decline.

Market Risk: Turbulence in the financial markets and reduced liquidity may negatively affect issuers, which could have an adverse effect on the Fund. In addition, there is a risk that policy changes by the U.S. Government, Federal Reserve, or other government actors, which could include increasing interest rates, could cause increased volatility in financial markets and lead to higher levels of Fund redemptions, which could have a negative impact on the Fund. The Fund’s NAV could decline 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 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 may lead to the Shares trading at a premium or discount to NAV.

Mid-Capitalization Companies Risk: Mid-capitalization companies may have greater price volatility, lower trading volume and less liquidity than large-capitalization companies. In addition, mid-capitalization companies may have smaller revenues, narrower product lines, less management depth and experience, smaller shares of their product or service markets, fewer financial resources and less competitive strength than large-capitalization companies.

Non-Diversification Risk: The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.

Passive Investment Risk: The Fund is not actively managed and the Adviser does not attempt to take defensive positions in declining markets. Unlike many investment companies, the Fund does not utilize an investing strategy that seeks returns in excess of its Underlying Index. Therefore, it would not necessarily buy or sell a security unless that security is added or removed, respectively, from the Underlying Index, even if that security generally is underperforming. Maintaining investments in securities regardless of market conditions or the performance of individual securities could cause the Fund’s return to be lower than if the Fund employed an active strategy.

Premium/Discount Risk: Disruptions to creations and redemptions, the existence of extreme market volatility or potential lack of an active trading market for Shares may result in Shares trading at a significant premium or discount to NAV. If a shareholder purchases Shares at a time when the market price is at a premium to the NAV or sells Shares at a time when the market price is at a discount to the NAV, the shareholder may sustain losses.



Risks Related to Investing in Education Companies: Education companies may be affected by changes in demographics and changes in consumer demands. Furthermore, government regulations, programs and policies can have a significant impact on the products and services provided by education companies. Some education companies rely heavily on tax breaks and government subsidies, which can be very policy-dependent and may not continue indefinitely in the future. Education companies are also affected by macroeconomic growth and the overall strength of the labor market, which can influence the demand for educational products and services. Some education companies have recently faced increased regulatory scrutiny, and in some cases litigation, due to business practices that were perceived as unfair and misleading to consumers. Ongoing and future legal actions could have a negative impact on education companies.

Risks Related to Investing in Hong Kong: Investments in Hong Kong issuers may subject the Fund to legal, regulatory, political, currency, security, and economic risk specific to Hong Kong. China is Hong Kong’s largest trading partner, both in terms of exports and imports. Any changes in the Chinese economy, trade regulations or currency exchange rates, or a tightening of China’s control over Hong Kong, may have an adverse impact on Hong Kong’s economy.

Risks Related to Investing in International Stocks: The Fund’s investments in foreign stocks can be riskier than U.S. stock investments. The prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. In addition, world events - such as political upheaval, financial troubles, or natural disasters - could adversely affect the value of securities issued by companies in foreign countries or regions. Stocks of companies located in emerging markets will be substantially more volatile, and substantially less liquid, than the stocks of companies located in more developed foreign markets.

Risks Related to Investing in the Consumer Discretionary Sector: 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.

Risks Related to Investing in the United Kingdom: Investments in United Kingdom issuers may subject the Fund to regulatory, political, currency, security, and economic risks specific to the United Kingdom. The United Kingdom has one of the largest economies in Europe, and the United States and other European countries are substantial trading partners of the United Kingdom. As a result, the United Kingdom’s economy may be impacted by changes to the economic condition of the United States and other European countries. The United Kingdom’s economy, along with certain other European Union (the “EU”) economies, experienced a significant economic slowdown during the financial crisis that began in 2007; certain United Kingdom financial institutions suffered significant losses, were severely under-capitalized and required government intervention to survive. In a referendum held on June 23, 2016, the United Kingdom resolved to leave the European Union. The referendum may introduce significant new uncertainties and instability in the financial markets as the United Kingdom negotiates its exit from the European Union.

Small-Capitalization Companies Risk: Compared to mid- and large-capitalization companies, small-capitalization companies may be less stable and more susceptible to adverse developments, and their securities may be more volatile and less liquid.

Tracking Error Risk: The Fund’s return may not match the return of the Underlying Index for a number of reasons. For example, the Fund incurs operating expenses not applicable to the Underlying Index, and incurs costs in buying and selling securities, especially when rebalancing the Fund’s securities holdings to reflect changes in the composition of the Underlying Index. In addition, the performance of the Fund and the Underlying Index may vary due to asset valuation differences and differences between the Fund’s portfolio and the Underlying Index resulting from legal restrictions, costs or liquidity constraints.
Trading Halt Risk: An exchange or market may close or issue trading halts on specific securities, or the ability to buy or sell certain securities or financial instruments may be restricted, which may result in the Fund being unable to buy or sell certain securities or financial instruments. In such circumstances, the Fund may be unable to rebalance its portfolio, may be unable to accurately price its investments and/or may incur substantial trading losses.

U.S. Economic Risk: Decreasing U.S. imports, new trade regulations, changes in the U.S. dollar exchange rates, a recession in the United States or continued increases in foreclosures rates may have an adverse impact on the Fund.

Valuation Risk: The sales 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 that trade in low value or volatile markets or that are valued using a fair value methodology. 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.
Risk Nondiversified Status [Text] rr_RiskNondiversifiedStatus The Fund is classified as a “non-diversified” investment company under the investment Company Act of 1940 ("1940 Act"). As a result, the Fund is subject to the risk that it will be more volatile than a diversified fund because the Fund may invest its assets in a smaller number of issuers or may invest a larger proportion of its assets in a single issuer. As a result, the gains and losses on a single investment may have a greater impact on the Fund’s NAV and may make the Fund more volatile than more diversified funds.
Bar Chart and Performance Table [Heading] rr_BarChartAndPerformanceTableHeading PERFORMANCE INFORMATION
Performance Narrative [Text Block] rr_PerformanceNarrativeTextBlock
The Fund has not commenced operations as of the date of this prospectus. Thus, no bar chart or average annual total returns table is included for the Fund.
Performance One Year or Less [Text] rr_PerformanceOneYearOrLess The Fund has not commenced operations as of the date of this prospectus. Thus, no bar chart or average annual total returns table is included for the Fund.
Global X Funds | Global X Education Thematic ETF | Global X Education Thematic ETF  
Prospectus: rr_ProspectusTable  
Trading Symbol dei_TradingSymbol EDUX
Management Fees (as a percentage of Assets) rr_ManagementFeesOverAssets 0.68%
Distribution and Service (12b-1) Fees rr_DistributionAndService12b1FeesOverAssets none
Other Expenses (as a percentage of Assets): rr_OtherExpensesOverAssets none
Expenses (as a percentage of Assets) rr_ExpensesOverAssets 0.68%
Expense Example, with Redemption, 1 Year rr_ExpenseExampleYear01 $ 69
Expense Example, with Redemption, 3 Years rr_ExpenseExampleYear03 $ 218
[1] Hybrid Index performance reflects the performance of the Solactive MLP Composite Index through March 31, 2015 and Solactive MLP Infrastructure Index thereafter.
[2] The Fund is classified for federal income tax purposes as a taxable regular corporation or so-called Subchapter "C’’ corporation. As a ‘‘C’’ corporation, the Fund accrues deferred tax liability for its future tax liability associated with the capital appreciation of its investments and the distributions received by the Fund on equity securities of master limited partnerships considered to be a return of capital and for any net operating gains. The Fund’s accrued deferred tax liability, if any, is reflected each day in the Fund’s net asset value per share. The deferred income tax expense/(benefit) represents an estimate of the Fund’s potential tax expense/(benefit) if it were to recognize the unrealized gains/(losses) in the portfolio. An estimate of deferred income tax expense/(benefit) is dependent upon the Fund’s net investment income/(loss) and realized and unrealized gains/(losses) on investments and such expenses may vary greatly from year to year and from day to day depending on the nature of the Fund’ s investments, the performance of those investments and general market conditions. Therefore, any estimate of deferred income tax expense/(benefit) cannot be reliably predicted from year to year. The Fund has accrued a state franchise tax liability for the year ended November 30, 2016. State franchise taxes are separate and distinct from state income taxes. State franchise taxes are imposed on a corporation for the right to conduct business in the state and typically are based off the net worth or capital apportioned to a state. Due to the nature of the Fund's investments, the Fund may be required to file franchise state returns in several states.
[3] After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown above. After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
[4] The Fund is classified for federal income tax purposes as a taxable regular corporation or so-called Subchapter ‘‘C’’ corporation. As a ‘‘C’’ corporation, the Fund accrues deferred tax liability for its future tax liability associated with the capital appreciation of its investments and the distributions received by the Fund on equity securities of master limited partnerships considered to be a return of capital and for any net operating gains. The Fund’s accrued deferred tax liability, if any, is reflected each day in the Fund’s net asset value per share. The deferred income tax expense/(benefit) represents an estimate of the Fund’s potential tax expense/(benefit) if it were to recognize the unrealized gains/(losses) in the portfolio. An estimate of deferred income tax expense/(benefit) is dependent upon the Fund’s net investment income/(loss) and realized and unrealized gains/(losses) on investments and such expenses may vary greatly from year to year and from day to day depending on the nature of the Fund’ s investments, the performance of those investments and general market conditions. Therefore, any estimate of deferred income tax expense/(benefit) cannot be estimated in advance or reliably predicted from year to year. The Fund has accrued a state franchise tax liability for the year ended November 30, 2016. State franchise taxes are separate and distinct from state income taxes. State franchise taxes are imposed on a corporation for the right to conduct business in the state and typically are based off the net worth or capital apportioned to a state. Due to the nature of the Fund's investments, the Fund may be required to file franchise state returns in several states.
[5] After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown above. After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
[6] “Other Expenses” reflect estimated expenses for the Fund’s first fiscal year of operations. The Fund is classified for federal income tax purposes as a taxable regular corporation or so-called Subchapter ‘‘C’’ corporation. As a ‘‘C’’ corporation, the Fund will accrue deferred tax liability for its future tax liability associated with the capital appreciation of its investments and the distributions received by the Fund on equity securities of master limited partnerships considered to be a return of capital and for any net operating gains. The Fund’s accrued deferred tax liability, if any, will be reflected each day in the Fund’s net asset value per share. The deferred income tax expense/(benefit) represents an estimate of the Fund’s potential tax expense/(benefit) if it were to recognize the unrealized gains/(losses) in the portfolio. An estimate of deferred income tax expense/(benefit) is dependent upon the Fund’s net investment income/(loss) and realized and unrealized gains/(losses) on investments and such expenses may vary greatly from year to year and from day to day depending on the nature of the Fund’ s investments, the performance of those investments and general market conditions. Therefore, any estimate of deferred income tax expense/(benefit) cannot be reliably estimated in advance or predicted from year to year. The Fund will accrue a state franchise tax liability. State franchise taxes are separate and distinct from state income taxes. State franchise taxes are imposed on a corporation for the right to conduct business in the state and typically are based off the net worth or capital apportioned to a state. Due to the nature of the Fund's investments, the Fund may be required to file franchise state returns in several states.
[7] After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown above. After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
[8] “Acquired Fund Fees and Expenses” sets forth the Fund’s pro rata portion of the cumulative expenses charged by the exchange traded funds, closed end funds, business development companies and other investment companies in which the Fund invests. These expenses are calculated based on the Fund's portfolio holdings during the prior fiscal period. The actual Acquired Fund Fees and Expenses will vary with changes in the allocations of the Fund’s assets.
[9] After-tax returns are calculated using the historical highest individual U.S. federal marginal income tax rates and do not reflect the impact of state and local taxes. Your actual after-tax returns will depend on your specific tax situation and may differ from those shown above. After-tax returns are not relevant to investors who hold Shares of the Fund through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts (IRAs).
[10] "Other Expenses" reflect estimated expenses for the Fund's current fiscal year.
[11] "Other Expenses" reflect estimated expenses for the Fund's current fiscal year.
[12] Pursuant to an Expense Limitation Agreement, the Adviser has contractually agreed to reimburse or waive fees and/or limit Fund expenses to the extent necessary to assure that the operating expenses of the Fund (exclusive of taxes, brokerage fees, commissions, and other transaction expenses, interest, and extraordinary expenses (such as litigation and indemnification expenses)) will not exceed 0.50% of the Fund’s average daily net assets per year until at least April 1, 2018. Pursuant to the Expense Limitation Agreement, the Fund (at a later date) may reimburse the Adviser for the fees it reimbursed or waived and/or limited pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to the Adviser does not cause Total Annual Fund Operating Expenses of the Fund to exceed 0.50% during the year in which it is paid and the Board of Trustees has approved such reimbursement to the Adviser.
[13] Pursuant to an Expense Limitation Agreement, the Adviser has contractually agreed to reimburse or waive fees and/or limit Fund expenses to the extent necessary to assure that the operating expenses of the Fund (exclusive of taxes, brokerage fees, commissions, and other transaction expenses, interest, and extraordinary expenses (such as litigation and indemnification expenses)) will not exceed 0.50% of the Fund’s average daily net assets per year until at least April 1, 2018. Pursuant to the Expense Limitation Agreement, the Fund (at a later date) may reimburse the Adviser for the fees it reimbursed or waived and/or limited pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to the Adviser does not cause Total Annual Fund Operating Expenses of the Fund to exceed 0.50% during the year in which it is paid and the Board of Trustees has approved such reimbursement to the Adviser.
[14] Pursuant to an Expense Limitation Agreement, the Adviser has contractually agreed to reimburse or waive fees and/or limit Fund expenses to the extent necessary to assure that the operating expenses of the Fund (exclusive of taxes, brokerage fees, commissions, and other transaction expenses, interest, and extraordinary expenses (such as litigation and indemnification expenses)) will not exceed 0.50% of the Fund’s average daily net assets per year until at least April 1, 2018. Pursuant to the Expense Limitation Agreement, the Fund (at a later date) may reimburse the Adviser for the fees it reimbursed or waived and/or limited pursuant to the Expense Limitation Agreement during any of the prior three fiscal years, provided that, among other things, reimbursement to be made to the Adviser does not cause Total Annual Fund Operating Expenses of the Fund to exceed 0.50% during the year in which it is paid and the Board of Trustees has approved such reimbursement to the Adviser.
[15] "Other Expenses" reflect estimated expenses for the Fund's current fiscal year.