Label

Element

Value

Prospectus:

rr_ProspectusTable

Document Type

dei_DocumentType

Other

Document Period End Date

dei_DocumentPeriodEndDate

Dec. 31, 2015

Registrant Name

dei_EntityRegistrantName

GLOBAL X FUNDS

Central Index Key

dei_EntityCentralIndexKey

0001432353

Amendment Flag

dei_AmendmentFlag

false

Trading Symbol

dei_TradingSymbol

GREK

Document Creation Date

dei_DocumentCreationDate

Jan. 06, 2015

Document Effective Date

dei_DocumentEffectiveDate

Dec. 31, 2015

Prospectus Date

rr_ProspectusDate

Mar. 01, 2015

Global X FTSE Greece 20 ETF (Prospectus Summary) | Global X FTSE Greece 20 ETF

Prospectus:

rr_ProspectusTable

Risk/Return [Heading]

rr_RiskReturnHeading

Global X FTSE Greece 20 ETF

Supplement [Text Block]

cik0001432353_SupplementTextBlock

Supplement dated December 31, 2015

to the Summary Prospectus and Statutory Prospectus, each dated March 1, 2015, as supplemented July 7, 2015, and Statement of Additional Information (“SAI”) dated March 1, 2015

The information in this Supplement updates information in, and should be read in conjunction with, the Summary Prospectus, Statutory Prospectus and SAI for the Fund.

The name of the Fund and its underlying index will change on or around March 1, 2016.

	Current	New
Fund Name	Global X FTSE Greece 20 ETF	Global X MSCI Greece ETF
Index	FTSE/ATHEX Custom Capped Index	MSCI All Greece Select 25/50 Index
Index Components	20	20*
Index Description	The FTSE/ATHEX Custom Capped Index is designed to reflect broad-based equity market performance in Greece. The stocks are screened for liquidity and weighted according to modified free-float market capitalization. The index is comprised of the top 20 companies that are domiciled in, principally traded in or whose revenues are primarily from Greece. A specific capping methodology is applied to facilitate compliance with the rules governing the listing of financial products on exchanges in the United States.	The MSCI All Greece Select 25/50 Index is designed to represent the performance of the Broad Greece Equity Universe, while including constituents with minimum levels of liquidity. The Broad Greece Equity Universe includes securities that are classified in Greece according to the MSCI Global Investable Market Index Methodology, together with companies that are headquartered or listed in Greece and carry out the majority of their operations in Greece. A specific capping methodology is applied to facilitate compliance with the rules governing the listing of financial products on exchanges in the United States.

The current index is the FTSE/ATHEX Custom Capped Index (the “Current Index”). The Current Index is designed to reflect broad-based equity market performance in Greece. The stocks are screened for liquidity and weighted according to modified free-float market capitalization. The new index is the MSCI All Greece Select 25/50 Index (the “New Index”). The New Index is designed to represent the performance of the Broad Greece Equity Universe, while including constituents with minimum levels of liquidity and applying a specific capping methodology to facilitate compliance with the rules governing the listing of financial products on exchanges in the United States.

*Index constituents for the MSCI All Greece Select 25/50 Index are as of December 30, 2015. The number of index constituents may change by the effective date on or around March 1, 2016.