497

FGT3 P2 09/18

SUPPLEMENT DATED SEPTEMBER 10, 2018

TO THE PROSPECTUS DATED DECEMBER 1, 2017

OF

FRANKLIN GLOBAL TRUST

Franklin International Growth Fund

Franklin International Small Cap Growth Fund

The prospectus is amended as follows:

I.  The following replaces the “Shareholder Fees” and “Example” tables in the “Fund Summaries – Franklin International Growth Fund – Fees and Expenses of the Fund” section of the prospectus:

Shareholder Fees

(fees paid directly from your investment)

	Class A1	Class C2	Class R	Class R6	Advisor Class
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	5.50%	None	None	None	None
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	None	1.00%	None	None	None

1. There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

2. Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date.  Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes.  Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods.  (See “Your Account – Choosing a Shares Class – Sales Charges – Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

Example

	1 Year	3 Years	5 Years	10 Years
Class A	$ 658	$ 959	$ 1,281	$ 2,193
Class C	$ 290	$ 663	$ 1,162	$ 2,538
Class R	$ 139	$ 510	$ 905	$ 2,012
Class R6	$ 65	$ 248	$ 446	$ 1,019
Advisor Class	$ 89	$ 355	$ 641	$ 1,457
If you do not sell your shares:
Class C	$ 190	$ 663	$ 1,162	$ 2,538

II.  The following is added to the “Fund Summaries – Franklin International Growth Fund – Performance” section of the prospectus:

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018.  Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018.  If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

III.  The following replaces the “Shareholder Fees” and “Example” tables in the “Fund Summaries – Franklin International Small Cap Growth Fund – Fees and Expenses of the Fund” section of the prospectus:

Shareholder Fees

(fees paid directly from your investment)

	Class A1	Class C2	Class R	Class R6	Advisor Class
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	5.50%	None	None	None	None
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	None	1.00%	None	None	None

1

1. There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

2. Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date.  Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes.  Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods.  (See “Your Account – Choosing a Shares Class – Sales Charges – Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

Example

	1 Year	3 Years	5 Years	10 Years
Class A	$ 683	$ 963	$ 1,264	$ 2,116
Class C	$ 317	$ 670	$ 1,149	$ 2,472
Class R	$ 167	$ 517	$ 892	$ 1,944
Class R6	$ 101	$ 315	$ 547	$ 1,213
Advisor Class	$ 116	$ 362	$ 628	$ 1,386
If you do not sell your shares:
Class C	$ 217	$ 670	$ 1,149	$ 2,472

IV.  The following is added to the “Fund Summaries – Franklin International Small Cap Growth Fund – Performance” section of the prospectus:

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018.  Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018.  If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

V. The first chart under the “Your Account – Choosing a Share Class” section of the prospectus is replaced with the following:

Class A	Class C	Class R	Class R6	Advisor Class
Initial sales charge of 5.50% or less	No initial sales charge	No initial sales charge	See "Qualified Investors - Class R6" below	See "Qualified Investors - Advisor Class" below
Deferred sales charge of 1% on purchases of $1 million or more sold within 18 months	Deferred sales charge of 1% on shares you sell within 12 months	Deferred sales charge is not applicable
Lower annual expenses than Class C or R due to lower distribution fees	Higher annual expenses than Class A due to higher distribution fees.  Automatic conversion to Class A shares after approximately ten years, reducing future annual expenses.	Higher annual expenses than Class A due to higher distribution fees (lower than Class C).  No conversion to Class A shares, so annual expenses do not decrease.

VI. The first chart under the “Your Account – Choosing a Share Class – Class A, C & R – Sales Charges – Class A” section of the prospectus is replaced with the following:

2

when you invest this amount	the sales charge makes up this % of the offering price1	which equals this % of your net investment1
Under $50,000	5.50%	5.82%
$50,000 but under $100,000	4.50%	4.71%
$100,000 but under $250,000	3.50%	3.63%
$250,000 but under $500,000	2.50%	2.56%
$500,000 but under $1 million	2.00%	2.04%

1. The dollar amount of the sales charge is the difference between the offering price of the shares purchased (which factors in the applicable sales charge in this table) and the net asset value of those shares. Since the offering price is calculated to two decimal places using standard rounding criteria, the number of shares purchased and the dollar amount of the sales charge as a percentage of the offering price and of your net investment may be higher or lower depending on whether there was a downward or upward rounding.

VII. The following is added to the “Your Account – Choosing a Shares Class – Sales Charges - Class A – Sales Charge Waivers – Waivers for certain investors” section:

•  Class C shareholders whose shares are converted to Class A shares after 10 years under the Class C shares’ conversion feature.

VIII The “Notice of Automatic Conversion of Class C Shares to Class A Shares after 10-Year Holding Period” section under the “Your Account” section of the prospectus is removed and the following is added after the “Your Account – Choosing a Shares Class – Sales Charges – Class C – Distribution and Service (12b-1) Fees” section:

Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period

Effective on October 5, 2018, Class C shares’ conversion feature will become effective.  The conversion feature provides that Class C shares that have been held for 10 years or more will automatically convert into Class A shares and will be subject to Class A shares’ lower Rule 12b-1 fees (the “Conversion Feature”). On or about October 19, 2018, Class C shares of the Fund that have been outstanding for 10 years or more will automatically convert to Class A shares of the Fund on the basis of the relative net asset values of the two classes.  Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C (or Class C1) shares’ purchase date.  The monthly conversion date is expected to occur around the middle of every month and generally falls on a Friday.

Terms of the Conversion Feature.  Class C shares that automatically convert to Class A shares of the Fund will convert on the basis of the relative net asset values of the two classes.  Shareholders will not pay a sales charge, including a CDSC, upon the conversion of their Class C shares to Class A shares pursuant to the Conversion Feature. The automatic conversion of the Fund’s Class C shares into Class A shares after the 10-year holding period is not expected to be a taxable event for federal income tax purposes. Shareholders should consult with their tax advisor regarding the state and local tax consequences of such conversions.

If you previously owned Class C1 shares of the Fund, the time you held such shares will count towards the 10-year period for automatic conversion to Class A shares. Class C (or Class C1) shares of the Fund acquired through automatic reinvestment of dividends or distributions will convert to Class A shares of the Fund on the conversion date pro rata with the converting Class C shares of the Fund that were not acquired through reinvestment of dividends or distributions. 

Class C shares held through a financial intermediary in an omnibus account will be automatically converted into Class A shares only if the intermediary can document that the shareholder has met the required holding period. In certain circumstances, when shares are invested through retirement plans, omnibus accounts, and in certain other instances, the Fund and its agents may not have transparency into how long a shareholder has held Class C (or Class C1) shares for purposes of determining whether such Class C shares are eligible for automatic conversion into Class A shares and the financial intermediary may not have the ability to track purchases to credit individual shareholders’ holding periods.  This primarily occurs when shares are invested through certain record keepers for group retirement plans, where the intermediary cannot track share aging at the participant level.  In these circumstances, the Fund will not be able to automatically convert Class C shares into Class A shares as described above. In order to determine eligibility for conversion in these circumstances, it is the responsibility of the shareholder or their financial intermediary to notify the Fund that the shareholder is eligible for the conversion of Class C shares to Class A shares, and the shareholder or their financial intermediary may be required to maintain and provide the Fund with records that substantiate the holding period of Class C (and, if applicable, Class C1) shares. In these circumstances, it is the financial intermediary’s (and not the Fund’s) responsibility to keep records and to ensure that the shareholder is credited with the proper holding period. Please consult with your financial intermediary about your shares’ eligibility for this conversion feature. 

Also effective October 5, 2018, new accounts or plans may not be eligible to purchase Class C shares of the Fund if it is determined that the intermediary cannot track shareholder holding periods to determine whether a shareholder’s Class C shares are eligible for conversion to Class A shares.  Accounts or plans (and their successor, related and affiliated plans) that have Class C (or Class C1) shares of the Fund available to participants on or before October 5, 2018, may continue to open accounts for new participants in that share class and purchase additional shares in existing participant accounts.  The Fund has no responsibility for overseeing, monitoring or implementing a financial intermediary’s process for determining whether a shareholder meets the required holding period for conversion.

3

A financial intermediary may sponsor and/or control accounts, programs or platforms that impose a different conversion schedule or different eligibility requirements for the conversion of Class C shares into Class A shares. In these cases, Class C shareholders may convert to Class A shares under the policies of the financial intermediary and the conversion may be structured as an exchange of Class C shares for Class A shares of the Fund. Financial intermediaries will be responsible for making such exchanges in those circumstances. Please consult with your financial intermediary if you have any questions regarding your shares’ conversion from Class C shares to Class A shares.

IX. The following replaces the first sentence in the “Your Account – Choosing a Shares Class – Reinstatement Privilege” section:

If you sell any class of shares of a Franklin Templeton Investments fund, you may reinvest all or a portion of the proceeds from that sale within 90 days within the same share class (or share class equivalent if the share class you redeemed from is closed to new investors) without an initial sales charge.

X. The following is added to the “Your Account – Exchanging Shares – Exchange Privilege” section:

Exchange Effects on Class C Conversion Feature.  Effective October 5, 2018, if you exchange your Class C shares for the same class of shares of another Franklin Templeton fund, the time your shares are held in the initial Fund will count towards the 10-year period for automatic conversion to Class A shares.

XI. The following replaces the first paragraph under the “Your Account – Account Policies – Calculating Share Price – Class A & C” section of the prospectus:

When you buy shares, you pay the "offering price" for the shares. The "offering price" is determined by dividing the NAV per share by an amount equal to 1 minus the sales charge applicable to the purchase (expressed in decimals), calculated to two decimal places using standard rounding criteria. The number of Fund shares you will be issued will equal the amount invested divided by the applicable offering price for those shares, calculated to three decimal places using standard rounding criteria. For example, if the NAV per share is $10.25 and the applicable sales charge for the purchase is 5.50%, the offering price would be calculated as follows: 10.25 divided by 1.00 minus 0.055 [10.25/0.945] equals 10.582011, which, when rounded to two decimal points, equals 10.58. The offering price per share would be $10.58.

XII. The following replaces the chart under the “Your Account – Account Policies – Dealer Compensation – Class A, C & R” section of the prospectus:

	Class A	Class C	Class R
Commission (%)	—	1.001	—
Investment under $50,000	5.00	—	—
$50,000 but under $100,000	4.00	—	—
$100,000 but under $250,000	3.00	—	—
$250,000 but under $500,000	2.25	—	—
$500,000 but under $1 million	1.75	—	—
$1 million or more	up to 1.00	—	—
12b-1 fee to dealer	0.252, 3	1.004	0.50

1. Commission includes advance of the first year's 0.25% 12b-1 service fee. Distributors may pay a prepaid commission. However, Distributors does not pay a prepaid commission on any purchases by Employer Sponsored Retirement Plans.

2. For purchases at NAV where Distributors paid a prepaid commission, dealers may start to receive the 12b-1 fee in the 13th month after purchase. For purchases at NAV where Distributors did not pay a prepaid commission, dealers may start to receive the 12b-1 fee at the time of purchase.

3. Under the Distribution Plan for Class A, the Fund may pay up to 0.35% to Distributors or others, out of which 0.10% generally will be retained by Distributors for its distribution expenses. As set by the board of trustees (until further notice), the Fund currently may pay up to 0.25% under the Plan.

4. Dealers may be eligible to receive up to 0.25% at the time of purchase and may be eligible to receive 1% starting in the 13th month. During the first 12 months, the full 12b-1 fee will be paid to Distributors to partially offset the commission and the prepaid service fee paid at the time of purchase. For purchases at NAV where Distributors did not pay a prepaid commission, dealers may start to receive the 12b-1 fee at the time of purchase.  After approximately 10 years, Class C shares convert to Class A shares and dealers may then be eligible to receive the 12b-1 fee applicable to Class A.

Please keep this supplement with your prospectus for future reference.

4

FGT3 SA1 09/18

SUPPLEMENT DATED SEPTEMBER 10, 2018

TO THE STATEMENT OF ADDITIONAL INFORMATION

DATED DECEMBER 1, 2017

OF

FRANKLIN GLOBAL TRUST

Franklin International Growth Fund

Franklin International Small Cap Growth Fund

The Statement of Additional Information (“SAI”) is amended as follows:

I. The following replaces the first sentence under “Buying and Selling shares – Initial sales charges:”

The maximum initial sales charge is 5.50% for Class A.

II. The following replaces the second paragraph under “Buying and Selling shares – Initial sales charges – Financial intermediary compensation:”

Distributors may pay the following commissions to financial intermediaries who initiate and are responsible for purchases of Class A shares in the following amounts:

Amount of Investment	For Funds with an initial sales charge of 5.50% (%)	For Funds with an initial sales charge of 4.25% (%)	For Funds with an initial sales charge of 2.25% (%)
Under $50,000	5.00	4.00	2.00
$50,000 but under $100,000	4.00	4.00	2.00
$100,000 but under $250,000	3.00	3.00	1.75
$250,000 but under $500,000	2.25	2.25	1.25
$500,000 but under $1 million	1.75	1.00	1.00
$1 million but under $4 million	1.00	1.00	1.00
$4 million but under $10 million	1.00	1.00	1.00
$10 million but under $50 million	0.50	0.50	0.50
$50 million or more	0.25	0.25	0.25

Consistent with the provisions and limitations set forth in its Class A Rule 12b-1 distribution plan, the Fund may reimburse Distributors for the cost of these commission payments.

III. The following replaces the first paragraph under “Buying and Selling shares – Contingent deferred sales charge (CDSC) - Class A & C:”

Contingent deferred sales charge (CDSC) - Class A & C     If you invest any amount in Class C shares, $1 million or more in Class A shares of mutual funds with a maximum initial sales charge of 5.50% or $500,000 or more for mutual funds with a maximum initial sales charge of 4.25% or 2.25%, either as a lump sum or through our cumulative quantity discount or letter of intent programs, a CDSC may apply on any Class A shares you sell within 18 months and any Class C shares you sell within 12 months of purchase. The CDSC is 1% of the value of the shares sold or the net asset value at the time of purchase, whichever is less, for Class A shares of mutual funds with a maximum initial sales charge of 5.50% and for Class C shares.  The CDSC is 0.75% of the value of the shares sold or the net asset value at the time of purchase, whichever is less, for Class A shares of mutual funds with a maximum initial sales charge of 4.25% or 2.25%; however this CDSC will change to 1.00% on or after March 10, 2020.

Please keep this supplement with your SAI for future reference.

1

 

997 P1 09/18

SUPPLEMENT DATED SEPTEMBER 10, 2018

TO THE PROSPECTUS DATED DECEMBER 1, 2017

OF

FRANKLIN GLOBAL TRUST

Franklin Global Listed Infrastructure Fund

The prospectus is amended as follows:

I.  The following replaces the “Shareholder Fees” and “Example” tables in the “Fund Summary – Fees and Expenses of the Fund” section of the prospectus:

Shareholder Fees

(fees paid directly from your investment)

	Class A1	Class C2	Class R	Class R6	Advisor Class
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	5.50%	None	None	None	None
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	None	1.00%	None	None	None

1. There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

2. Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date.  Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes.  Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods.  (See “Your Account – Choosing a Shares Class – Sales Charges – Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

Example

	1 Year	3 Years	5 Years	10 Years
Class A	$ 669	$ 1,071	$ 1,498	$ 2,682
Class C	$ 302	$ 779	$ 1,383	$ 3,016
Class R	$ 152	$ 628	$ 1,132	$ 2,516
Class R6	$ 84	$ 578	$ 1,099	$ 2,530
Advisor Class	$ 101	$ 475	$ 873	$ 1,989
If you do not sell your shares:
Class C	$ 202	$ 779	$ 1,383	$ 3,016

II.  The following is added to the “Fund Summary – Performance” section of the prospectus:

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018.  Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018.  If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

III. The first chart under the “Your Account – Choosing a Share Class” section of the prospectus is replaced with the following:

Class A	Class C	Class R	Class R6	Advisor Class
Initial sales charge of 5.50% or less	No initial sales charge	No initial sales charge	See "Qualified Investors - Class R6" below	See "Qualified Investors - Advisor Class" below
Deferred sales charge of 1% on purchases of $1 million or more sold within 18 months	Deferred sales charge of 1% on shares you sell within 12 months	Deferred sales charge is not applicable
Lower annual expenses than Class C or R due to lower distribution fees	Higher annual expenses than Class A due to higher distribution fees.  Automatic conversion to Class A shares after approximately ten years, reducing future annual expenses.	Higher annual expenses than Class A due to higher distribution fees (lower than Class C).  No conversion to Class A shares, so annual expenses do not decrease.

1

IV. The first chart under the “Your Account – Choosing a Share Class – Class A, C & R – Sales Charges – Class A” section of the prospectus is replaced with the following:

when you invest this amount	the sales charge makes up this % of the offering price1	which equals this % of your net investmen1t
Under $50,000	5.50%	5.82%
$50,000 but under $100,000	4.50%	4.71%
$100,000 but under $250,000	3.50%	3.63%
$250,000 but under $500,000	2.50%	2.56%
$500,000 but under $1 million	2.00%	2.04%

1. The dollar amount of the sales charge is the difference between the offering price of the shares purchased (which factors in the applicable sales charge in this table) and the net asset value of those shares. Since the offering price is calculated to two decimal places using standard rounding criteria, the number of shares purchased and the dollar amount of the sales charge as a percentage of the offering price and of your net investment may be higher or lower depending on whether there was a downward or upward rounding.

V. The following is added to the “Your Account – Choosing a Shares Class – Sales Charges - Class A – Sales Charge Waivers – Waivers for certain investors” section:

•  Class C shareholders whose shares are converted to Class A shares after 10 years under the Class C shares’ conversion feature.

VI. The “Notice of Automatic Conversion of Class C Shares to Class A Shares after 10-Year Holding Period” section under the “Your Account” section of the prospectus is removed and the following is added after the “Your Account – Choosing a Shares Class – Sales Charges – Class C – Distribution and Service (12b-1) Fees” section:

Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period

Effective on October 5, 2018, Class C shares’ conversion feature will become effective.  The conversion feature provides that Class C shares that have been held for 10 years or more will automatically convert into Class A shares and will be subject to Class A shares’ lower Rule 12b-1 fees (the “Conversion Feature”). On or about October 19, 2018, Class C shares of the Fund that have been outstanding for 10 years or more will automatically convert to Class A shares of the Fund on the basis of the relative net asset values of the two classes.  Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C (or Class C1) shares’ purchase date.  The monthly conversion date is expected to occur around the middle of every month and generally falls on a Friday.

Terms of the Conversion Feature.  Class C shares that automatically convert to Class A shares of the Fund will convert on the basis of the relative net asset values of the two classes.  Shareholders will not pay a sales charge, including a CDSC, upon the conversion of their Class C shares to Class A shares pursuant to the Conversion Feature. The automatic conversion of the Fund’s Class C shares into Class A shares after the 10-year holding period is not expected to be a taxable event for federal income tax purposes. Shareholders should consult with their tax advisor regarding the state and local tax consequences of such conversions.

If you previously owned Class C1 shares of the Fund, the time you held such shares will count towards the 10-year period for automatic conversion to Class A shares. Class C (or Class C1) shares of the Fund acquired through automatic reinvestment of dividends or distributions will convert to Class A shares of the Fund on the conversion date pro rata with the converting Class C shares of the Fund that were not acquired through reinvestment of dividends or distributions. 

Class C shares held through a financial intermediary in an omnibus account will be automatically converted into Class A shares only if the intermediary can document that the shareholder has met the required holding period. In certain circumstances, when shares are invested through retirement plans, omnibus accounts, and in certain other instances, the Fund and its agents may not have transparency into how long a shareholder has held Class C (or Class C1) shares for purposes of determining whether such Class C shares are eligible for automatic conversion into Class A shares and the financial intermediary may not have the ability to track purchases to credit individual shareholders’ holding periods.  This primarily occurs when shares are invested through certain record keepers for group retirement plans, where the intermediary cannot track share aging at the participant level.  In these circumstances, the Fund will not be able to automatically convert Class C shares into Class A shares as described above. In order to determine eligibility for conversion in these circumstances, it is the responsibility of the shareholder or their financial intermediary to notify the Fund that the shareholder is eligible for the conversion of Class C shares to Class A shares, and the shareholder or their financial intermediary may be required to maintain and provide the Fund with records that substantiate the holding period of Class C (and, if applicable, Class C1) shares. In these circumstances, it is the financial intermediary’s (and not the Fund’s) responsibility to keep records and to ensure that the shareholder is credited with the proper holding period. Please consult with your financial intermediary about your shares’ eligibility for this conversion feature. 

2

Also effective October 5, 2018, new accounts or plans may not be eligible to purchase Class C shares of the Fund if it is determined that the intermediary cannot track shareholder holding periods to determine whether a shareholder’s Class C shares are eligible for conversion to Class A shares.  Accounts or plans (and their successor, related and affiliated plans) that have Class C (or Class C1) shares of the Fund available to participants on or before October 5, 2018, may continue to open accounts for new participants in that share class and purchase additional shares in existing participant accounts.  The Fund has no responsibility for overseeing, monitoring or implementing a financial intermediary’s process for determining whether a shareholder meets the required holding period for conversion.

A financial intermediary may sponsor and/or control accounts, programs or platforms that impose a different conversion schedule or different eligibility requirements for the conversion of Class C shares into Class A shares. In these cases, Class C shareholders may convert to Class A shares under the policies of the financial intermediary and the conversion may be structured as an exchange of Class C shares for Class A shares of the Fund. Financial intermediaries will be responsible for making such exchanges in those circumstances. Please consult with your financial intermediary if you have any questions regarding your shares’ conversion from Class C shares to Class A shares.

VII. The following replaces the first sentence in the “Your Account – Choosing a Shares Class – Reinstatement Privilege” section:

If you sell any class of shares of a Franklin Templeton Investments fund, you may reinvest all or a portion of the proceeds from that sale within 90 days within the same share class (or share class equivalent if the share class you redeemed from is closed to new investors) without an initial sales charge.

VIII. The following is added to the “Your Account – Exchanging Shares – Exchange Privilege” section:

Exchange Effects on Class C Conversion Feature.  Effective October 5, 2018, if you exchange your Class C shares for the same class of shares of another Franklin Templeton fund, the time your shares are held in the initial Fund will count towards the 10-year period for automatic conversion to Class A shares.

IX. The following replaces the first paragraph under the “Your Account – Account Policies – Calculating Share Price – Class A & C” section of the prospectus:

When you buy shares, you pay the "offering price" for the shares. The "offering price" is determined by dividing the NAV per share by an amount equal to 1 minus the sales charge applicable to the purchase (expressed in decimals), calculated to two decimal places using standard rounding criteria. The number of Fund shares you will be issued will equal the amount invested divided by the applicable offering price for those shares, calculated to three decimal places using standard rounding criteria. For example, if the NAV per share is $10.25 and the applicable sales charge for the purchase is 5.50%, the offering price would be calculated as follows: 10.25 divided by 1.00 minus 0.055 [10.25/0.945] equals 10.582011, which, when rounded to two decimal points, equals 10.58. The offering price per share would be $10.58.

X. The following replaces the chart under the “Your Account – Account Policies – Dealer Compensation – Class A, C & R” section of the prospectus:

	Class A	Class C	Class R
Commission (%)	—	1.001	—
Investment under $50,000	5.00	—	—
$50,000 but under $100,000	4.00	—	—
$100,000 but under $250,000	3.00	—	—
$250,000 but under $500,000	2.25	—	—
$500,000 but under $1 million	1.75	—	—
$1 million or more	up to 1.00	—	—
12b-1 fee to dealer	0.252, 3	1.004	0.50

3

 

1. Commission includes advance of the first year's 0.25% 12b-1 service fee. Distributors may pay a prepaid commission. However, Distributors does not pay a prepaid commission on any purchases by Employer Sponsored Retirement Plans.

2. For purchases at NAV where Distributors paid a prepaid commission, dealers may start to receive the 12b-1 fee in the 13th month after purchase. For purchases at NAV where Distributors did not pay a prepaid commission, dealers may start to receive the 12b-1 fee at the time of purchase.

3. Under the Distribution Plan for Class A, the Fund may pay up to 0.35% to Distributors or others out of which 0.10% generally will be retained by Distributors for its distribution expenses. As set by the board of trustees (until further notice), the Fund currently may pay up to 0.25% under the Plan.

4. Dealers may be eligible to receive up to 0.25% at the time of purchase and may be eligible to receive 1% starting in the 13th month. During the first 12 months, the full 12b-1 fee will be paid to Distributors to partially offset the commission and the prepaid service fee paid at the time of purchase. For purchases at NAV where Distributors did not pay a prepaid commission, dealers may start to receive the 12b-1 fee at the time of purchase.  After approximately 10 years, Class C shares convert to Class A shares and dealers may then be eligible to receive the 12b-1 fee applicable to Class A.

Please keep this supplement with your prospectus for future reference.

4

 

997 SA1 09/18

SUPPLEMENT DATED SEPTEMBER 10, 2018

TO THE STATEMENT OF ADDITIONAL INFORMATION

DATED DECEMBER 1, 2017

OF

FRANKLIN GLOBAL TRUST

Franklin Global Listed Infrastructure Fund

The Statement of Additional Information (“SAI”) is amended as follows:

I. The following replaces the first sentence under “Buying and Selling shares – Initial sales charges:”

The maximum initial sales charge is 5.50% for Class A.

II. The following replaces the second paragraph under “Buying and Selling shares – Initial sales charges – Financial intermediary compensation:”

Distributors may pay the following commissions to financial intermediaries who initiate and are responsible for purchases of Class A shares in the following amounts:

Amount of Investment	For Funds with an initial sales charge of 5.50% (%)	For Funds with an initial sales charge of 4.25% (%)	For Funds with an initial sales charge of 2.25% (%)
Under $50,000	5.00	4.00	2.00
$50,000 but under $100,000	4.00	4.00	2.00
$100,000 but under $250,000	3.00	3.00	1.75
$250,000 but under $500,000	2.25	2.25	1.25
$500,000 but under $1 million	1.75	1.00	1.00
$1 million but under $4 million	1.00	1.00	1.00
$4 million but under $10 million	1.00	1.00	1.00
$10 million but under $50 million	0.50	0.50	0.50
$50 million or more	0.25	0.25	0.25

Consistent with the provisions and limitations set forth in its Class A Rule 12b-1 distribution plan, the Fund may reimburse Distributors for the cost of these commission payments.

III. The following replaces the first paragraph under “Buying and Selling shares – Contingent deferred sales charge (CDSC) - Class A & C:”

Contingent deferred sales charge (CDSC) - Class A & C     If you invest any amount in Class C shares, $1 million or more in Class A shares of mutual funds with a maximum initial sales charge of 5.50% or $500,000 or more for mutual funds with a maximum initial sales charge of 4.25% or 2.25%, either as a lump sum or through our cumulative quantity discount or letter of intent programs, a CDSC may apply on any Class A shares you sell within 18 months and any Class C shares you sell within 12 months of purchase. The CDSC is 1% of the value of the shares sold or the net asset value at the time of purchase, whichever is less, for Class A shares of mutual funds with a maximum initial sales charge of 5.50% and for Class C shares.  The CDSC is 0.75% of the value of the shares sold or the net asset value at the time of purchase, whichever is less, for Class A shares of mutual funds with a maximum initial sales charge of 4.25% or 2.25%; however this CDSC will change to 1.00% on or after March 10, 2020.

Please keep this supplement with your SAI for future reference.

1

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Document Type	dei_DocumentType	497
Document Period End Date	dei_DocumentPeriodEndDate	Jul. 31, 2018
Registrant Name	dei_EntityRegistrantName	FRANKLIN GLOBAL TRUST
Central Index Key	dei_EntityCentralIndexKey	0001124459
Amendment Flag	dei_AmendmentFlag	false
Document Creation Date	dei_DocumentCreationDate	Sep. 10, 2018
Document Effective Date	dei_DocumentEffectiveDate	Sep. 10, 2018
Prospectus Date	rr_ProspectusDate	Sep. 10, 2018

XML

Fund Summary

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund

Investment Goal

Long-term capital appreciation.

Fees and Expenses of the Fund

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 48 in the Fund's Prospectus and under “Buying and Selling Shares” on page 44 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A - "Intermediary Sales Charge Discounts and Waivers" to the Fund's prospectus.

Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class R6 or Advisor Class shares.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees {- Franklin International Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Growth Fund	Class A	[1]	Class C	[2]	Class R	Class R6	Advisor Class
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	5.50%		none		none	none	none
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	none		1.00%		none	none	none

Annual Fund Operating Expenses

(expenses that you pay each year as a percentage of the value of your investment)

Annual Operating Expenses {- Franklin International Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Growth Fund		Class A	Class C	Class R		Class R6	Advisor Class
Management fees	[1]	0.76%	0.76%	0.76%		0.76%	0.76%
Distribution and service (12b-1) fees		0.25%	1.00%	0.50%	[2]	none	none
Other expenses		0.46%	0.46%	0.46%		0.07%	0.46%
Acquired fund fees and expenses		0.01%	0.01%	0.01%		0.01%	0.01%
Total annual Fund operating expenses	[1]	1.48%	2.23%	1.73%		0.84%	1.23%
Fee waiver and/or expense reimbursement	[3]	(0.36%)	(0.36%)	(0.36%)		(0.20%)	(0.36%)
Total annual Fund operating expenses after fee waiver and/or expense reimbursement	[3]	1.12%	1.87%	1.37%		0.64%	0.87%

Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example {- Franklin International Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Growth Fund - USD ($)	Class A	Class C	Class R	Class R6	Advisor Class
1 year	$ 658	$ 290	$ 139	$ 65	$ 89
3 years	959	663	510	248	355
5 years	1,281	1,162	905	446	641
10 years	$ 2,193	$ 2,538	$ 2,012	$ 1,019	$ 1,457

If you do not sell your shares:

Expense Example, No Redemption {- Franklin International Growth Fund}	Franklin Global Trust 3 - FGT3-18 Franklin International Growth Fund Class C USD ($)
1 Year	$ 190
3 Years	663
5 Years	1,162
10 Years	$ 2,538

Portfolio Turnover

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 Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 28.66% of the average value of its portfolio.

Principal Investment Strategies

Under normal market conditions, the Fund invests predominantly in equity securities, primarily common stock, of mid- and large-capitalization companies located outside the U.S., including developing or emerging market countries. The Fund may invest up to 20% of its net assets in emerging market countries. Mid- and large-capitalization companies are generally companies with market capitalizations of greater than $2 billion. The Fund, from time to time, may have significant investments in a particular sector or country.

The Fund's investment manager employs a disciplined, bottom-up investment approach to identify attractive investment opportunities that have higher expected revenue and earnings growth than their peers. The investment manager uses a growth investment style and in-depth, fundamental research to identify high-quality companies, across all industry groups, with sustainable business models that offer the most attractive combination of growth, quality and valuation.

Principal Risks

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Market

The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Stock prices tend to go up and down more dramatically than those of debt securities. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund.

Growth Style Investing

Growth stock prices reflect projections of future earnings or revenues, and can, therefore, fall dramatically if the company fails to meet those projections. Prices of these companies’ securities may be more volatile than other securities, particularly over the short term.

Foreign Securities

Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies. The risks of foreign investments may be greater in developing or emerging market countries.

Regional Focus

Because the Fund may invest at least a significant portion of its assets in companies in a specific region, including Europe, the Fund is subject to greater risks of adverse developments in that region and/or the surrounding regions than a fund that is more broadly diversified geographically. Political, social or economic disruptions in the region, even in countries in which the Fund is not invested, may adversely affect the value of investments held by the Fund. Current political uncertainty surrounding the European Union (EU) and its membership, including the 2016 referendum in which the United Kingdom voted to exit the EU, may increase market volatility. The financial instability of some countries in the EU, including Greece, Italy and Spain, together with the risk of that impacting other more stable countries may increase the economic risk of investing in companies in Europe.

Emerging Markets

The Fund's investments in emerging market countries are subject to all of the risks of foreign investing generally, and have additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation.

Midsize Companies

Securities issued by midsize companies may be more volatile in price than those of larger companies, involve substantial risks and should be considered speculative. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development and limited or less developed product lines and markets.

Focus

To the extent that the Fund focuses on particular countries, regions, industries, sectors or types of investment from time to time, the Fund may be subject to greater risks of adverse developments in such areas of focus than a fund that invests in a wider variety of countries, regions, industries, sectors or investments.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Performance

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Class A Annual Total Returns

Best Quarter:	Q2'09	29.68%
Worst Quarter:	Q3'11	-21.13%
As of September 30, 2017, the Fund's year-to-date return was 28.82%.

Average Annual Total Returns
(figures reflect sales charges)

For the periods ended December 31, 2016

Average Annual Total Returns{- Franklin International Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Growth Fund	Past 1 year	Past 5 years	Since Inception	[1]
Class A | Return Before Taxes	(4.62%)	4.40%	0.84%
Class A | After Taxes on Distributions	(4.62%)	4.39%	0.80%
Class A | After Taxes on Distributions and Sales	(2.40%)	3.54%	0.75%
Class C | Return Before Taxes	(0.52%)	4.91%	0.81%
Class R | Return Before Taxes	1.05%	5.43%	1.31%
Class R6 | Return Before Taxes	1.77%		1.49%
Advisor Class | Return Before Taxes	1.47%	5.98%	1.84%
MSCI EAFE (Net Dividends) Index (index reflects no deduction for fees, expenses or taxes [other than the deduction of withholding taxes on reinvested dividends])	1.00%	6.53%	0.07%

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018. Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018. If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Class A and after-tax returns for other classes will vary.

[1] There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

[2] Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date. Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes. Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods. (See “Your Account – Choosing a Shares Class – Sales Charges - Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

[1] Management fees in the table above have been restated to reflect a reduction in the management fee of the Fund effective on December 1, 2016. If the management fees had not been restated, management fees would have been 0.83% for each class of shares of the Fund and the Total annual Fund operating expenses for Class A, Class C, Class R, Class R6 and Advisor Class shares in the table above would have been 1.55%, 2.30%, 1.80%, 0.91% and 1.30%, respectively.

[2] Class R distribution and service (12b-1) fees have been restated to reflect the current fiscal year distribution and service (12b-1) fees.

[3] The fee waiver and/or expense reimbursement above has been updated to reflect that the investment manager has contractually agreed to waive or assume certain expenses so that total annual Fund operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses and certain non-routine expenses) for each class of the Fund do not exceed 0.86% through November 30, 2019. The investment manager also has contractually agreed in advance to reduce its fees as a result of the Fund’s investment in a Franklin Templeton money fund (acquired fund) for the next 12 month period. Contractual fee waiver and/or expense reimbursement agreements may not be changed or terminated during the time period set forth above.

[1] Since inception June 3, 2008 for Class A, Class C, Class R and Advisor Class; Class R6, May 1, 2013.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FRANKLIN GLOBAL TRUST

Prospectus Date

rr_ProspectusDate

Sep. 10, 2018

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Goal

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 48 in the Fund's Prospectus and under “Buying and Selling Shares” on page 44 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A - "Intermediary Sales Charge Discounts and Waivers" to the Fund's prospectus.

Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class R6 or Advisor Class shares.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 28.66% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

28.66%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

If you do not sell your shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests predominantly in equity securities, primarily common stock, of mid- and large-capitalization companies located outside the U.S., including developing or emerging market countries. The Fund may invest up to 20% of its net assets in emerging market countries. Mid- and large-capitalization companies are generally companies with market capitalizations of greater than $2 billion. The Fund, from time to time, may have significant investments in a particular sector or country.

The Fund's investment manager employs a disciplined, bottom-up investment approach to identify attractive investment opportunities that have higher expected revenue and earnings growth than their peers. The investment manager uses a growth investment style and in-depth, fundamental research to identify high-quality companies, across all industry groups, with sustainable business models that offer the most attractive combination of growth, quality and valuation.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Under normal market conditions, the Fund invests predominantly in equity securities, primarily common stock, of mid- and large-capitalization companies located outside the U.S., including developing or emerging market countries.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Market

The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Stock prices tend to go up and down more dramatically than those of debt securities. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund.

Growth Style Investing

Growth stock prices reflect projections of future earnings or revenues, and can, therefore, fall dramatically if the company fails to meet those projections. Prices of these companies’ securities may be more volatile than other securities, particularly over the short term.

Foreign Securities

Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies. The risks of foreign investments may be greater in developing or emerging market countries.

Regional Focus

Because the Fund may invest at least a significant portion of its assets in companies in a specific region, including Europe, the Fund is subject to greater risks of adverse developments in that region and/or the surrounding regions than a fund that is more broadly diversified geographically. Political, social or economic disruptions in the region, even in countries in which the Fund is not invested, may adversely affect the value of investments held by the Fund. Current political uncertainty surrounding the European Union (EU) and its membership, including the 2016 referendum in which the United Kingdom voted to exit the EU, may increase market volatility. The financial instability of some countries in the EU, including Greece, Italy and Spain, together with the risk of that impacting other more stable countries may increase the economic risk of investing in companies in Europe.

Emerging Markets

The Fund's investments in emerging market countries are subject to all of the risks of foreign investing generally, and have additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation.

Midsize Companies

Securities issued by midsize companies may be more volatile in price than those of larger companies, involve substantial risks and should be considered speculative. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development and limited or less developed product lines and markets.

Focus

To the extent that the Fund focuses on particular countries, regions, industries, sectors or types of investment from time to time, the Fund may be subject to greater risks of adverse developments in such areas of focus than a fund that invests in a wider variety of countries, regions, industries, sectors or investments.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) DIAL BEN/342-5236

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

franklintempleton.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Class A Annual Total Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:	Q2'09	29.68%
Worst Quarter:	Q3'11	-21.13%
As of September 30, 2017, the Fund's year-to-date return was 28.82%.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
(figures reflect sales charges)

For the periods ended December 31, 2016

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018. Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018. If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Class A and after-tax returns for other classes will vary.

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

^[1]

Management fees

rr_ManagementFeesOverAssets

0.76%

^[2]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.46%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.48%

^[2]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.36%)

^[3]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.12%

^[3]

1 year

rr_ExpenseExampleYear01

$ 658

3 years

rr_ExpenseExampleYear03

959

5 years

rr_ExpenseExampleYear05

1,281

10 years

rr_ExpenseExampleYear10

$ 2,193

2009

rr_AnnualReturn2009

58.26%

2010

rr_AnnualReturn2010

13.25%

2011

rr_AnnualReturn2011

(11.99%)

2012

rr_AnnualReturn2012

22.52%

2013

rr_AnnualReturn2013

11.38%

2014

rr_AnnualReturn2014

(4.81%)

2015

rr_AnnualReturn2015

0.11%

2016

rr_AnnualReturn2016

1.20%

Year to Date Return, Label

rr_YearToDateReturnLabel

As of September 30, 2017, the Fund's year-to-date return was 28.82%.

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

29.68%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2011

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(21.13%)

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

^[4]

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

^[4]

Management fees

rr_ManagementFeesOverAssets

0.76%

^[2]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.46%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual Fund operating expenses

rr_ExpensesOverAssets

2.23%

^[2]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.36%)

^[3]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.87%

^[3]

1 year

rr_ExpenseExampleYear01

$ 290

3 years

rr_ExpenseExampleYear03

663

5 years

rr_ExpenseExampleYear05

1,162

10 years

rr_ExpenseExampleYear10

2,538

1 Year

rr_ExpenseExampleNoRedemptionYear01

190

3 Years

rr_ExpenseExampleNoRedemptionYear03

663

5 Years

rr_ExpenseExampleNoRedemptionYear05

1,162

10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,538

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Class R

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

0.76%

^[2]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

^[5]

Other expenses

rr_OtherExpensesOverAssets

0.46%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.73%

^[2]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.36%)

^[3]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.37%

^[3]

1 year

rr_ExpenseExampleYear01

$ 139

3 years

rr_ExpenseExampleYear03

510

5 years

rr_ExpenseExampleYear05

905

10 years

rr_ExpenseExampleYear10

$ 2,012

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Class R6

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

0.76%

^[2]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.07%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.84%

^[2]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.20%)

^[3]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.64%

^[3]

1 year

rr_ExpenseExampleYear01

$ 65

3 years

rr_ExpenseExampleYear03

248

5 years

rr_ExpenseExampleYear05

446

10 years

rr_ExpenseExampleYear10

$ 1,019

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

0.76%

^[2]

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.46%

Acquired fund fees and expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.01%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.23%

^[2]

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.36%)

^[3]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.87%

^[3]

1 year

rr_ExpenseExampleYear01

$ 89

3 years

rr_ExpenseExampleYear03

355

5 years

rr_ExpenseExampleYear05

641

10 years

rr_ExpenseExampleYear10

$ 1,457

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin International Growth Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(4.62%)

Past 5 years

rr_AverageAnnualReturnYear05

4.40%

Since Inception

rr_AverageAnnualReturnSinceInception

0.84%

^[6]

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

(0.52%)

Past 5 years

rr_AverageAnnualReturnYear05

4.91%

Since Inception

rr_AverageAnnualReturnSinceInception

0.81%

^[6]

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Return Before Taxes | Class R

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

1.05%

Past 5 years

rr_AverageAnnualReturnYear05

5.43%

Since Inception

rr_AverageAnnualReturnSinceInception

1.31%

^[6]

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Return Before Taxes | Class R6

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

1.77%

Past 5 years

rr_AverageAnnualReturnYear05

Since Inception

rr_AverageAnnualReturnSinceInception

1.49%

^[6]

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | Return Before Taxes | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

1.47%

Past 5 years

rr_AverageAnnualReturnYear05

5.98%

Since Inception

rr_AverageAnnualReturnSinceInception

1.84%

^[6]

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin International Growth Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(4.62%)

Past 5 years

rr_AverageAnnualReturnYear05

4.39%

Since Inception

rr_AverageAnnualReturnSinceInception

0.80%

^[6]

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | After Taxes on Distributions and Sales | Class A

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin International Growth Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(2.40%)

Past 5 years

rr_AverageAnnualReturnYear05

3.54%

Since Inception

rr_AverageAnnualReturnSinceInception

0.75%

^[6]

Franklin Global Trust 3 - FGT3-18 | Franklin International Growth Fund | MSCI EAFE (Net Dividends) Index (index reflects no deduction for fees, expenses or taxes [other than the deduction of withholding taxes on reinvested dividends])

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

1.00%

Past 5 years

rr_AverageAnnualReturnYear05

6.53%

Since Inception

rr_AverageAnnualReturnSinceInception

0.07%

^[6]

[1] There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

[2] Management fees in the table above have been restated to reflect a reduction in the management fee of the Fund effective on December 1, 2016. If the management fees had not been restated, management fees would have been 0.83% for each class of shares of the Fund and the Total annual Fund operating expenses for Class A, Class C, Class R, Class R6 and Advisor Class shares in the table above would have been 1.55%, 2.30%, 1.80%, 0.91% and 1.30%, respectively.

[3] The fee waiver and/or expense reimbursement above has been updated to reflect that the investment manager has contractually agreed to waive or assume certain expenses so that total annual Fund operating expenses (excluding Rule 12b-1 fees, acquired fund fees and expenses and certain non-routine expenses) for each class of the Fund do not exceed 0.86% through November 30, 2019. The investment manager also has contractually agreed in advance to reduce its fees as a result of the Fund’s investment in a Franklin Templeton money fund (acquired fund) for the next 12 month period. Contractual fee waiver and/or expense reimbursement agreements may not be changed or terminated during the time period set forth above.

[4] Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date. Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes. Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods. (See “Your Account – Choosing a Shares Class – Sales Charges - Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

[5] Class R distribution and service (12b-1) fees have been restated to reflect the current fiscal year distribution and service (12b-1) fees.

[6] Since inception June 3, 2008 for Class A, Class C, Class R and Advisor Class; Class R6, May 1, 2013.

XML

Fund Summary

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund

Investment Goal

Long-term capital appreciation.

Fees and Expenses of the Fund

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 48 in the Fund's Prospectus and under “Buying and Selling Shares” on page 44 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A - "Intermediary Sales Charge Discounts and Waivers" to the Fund's prospectus.

Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class R6 or Advisor Class shares.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees {- Franklin International Small Cap Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Small Cap Growth Fund	Class A	[1]	Class C	[2]	Class R	Class R6	Advisor Class
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	5.50%		none		none	none	none
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	none		1.00%		none	none	none

Annual Fund Operating Expenses

(expenses that you pay each year as a percentage of the value of your investment)

Annual Operating Expenses {- Franklin International Small Cap Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Small Cap Growth Fund	Class A	Class C		Class R	Class R6	Advisor Class
Management fees	0.95%	0.95%		0.95%	0.95%	0.95%
Distribution and service (12b-1) fees	0.24%	1.00%	[1]	0.50%	none	none
Other expenses	0.19%	0.19%		0.19%	0.04%	0.19%
Total annual Fund operating expenses	1.38%	2.14%		1.64%	0.99%	1.14%

Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. 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 {- Franklin International Small Cap Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Small Cap Growth Fund - USD ($)	Class A	Class C	Class R	Class R6	Advisor Class
1 year	$ 683	$ 317	$ 167	$ 101	$ 116
3 years	963	670	517	315	362
5 years	1,264	1,149	892	547	628
10 years	$ 2,116	$ 2,472	$ 1,944	$ 1,213	$ 1,386

If you do not sell your shares:

Expense Example, No Redemption {- Franklin International Small Cap Growth Fund}	Franklin Global Trust 3 - FGT3-18 Franklin International Small Cap Growth Fund Class C USD ($)
1 Year	$ 217
3 Years	670
5 Years	1,149
10 Years	$ 2,472

Portfolio Turnover

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 Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 21.71% of the average value of its portfolio.

Principal Investment Strategies

Under normal market conditions, the Fund invests at least 80% of its net assets in a diversified portfolio of marketable equity and equity-related securities of smaller international companies. Smaller international companies are companies with market capitalizations not exceeding (i) $5 billion or the equivalent in local currencies or (ii) the highest market capitalization in the Morgan Stanley Capital International (MSCI) Europe, Australasia, Far East (EAFE) Small Cap Index, whichever is greater, at the time of purchase. The equity securities in which the Fund primarily invests are common stock.

The Fund's investment manager generally intends to maintain a more focused portfolio consisting of approximately 25-45 securities. The Fund, from time to time, may have significant investments in a particular sector or country.

In choosing individual equity investments, the Fund's investment manager utilizes a fundamental "bottom-up" approach involving in-depth proprietary analysis of individual equity securities. In narrowing down the universe of eligible investments, the investment manager employs a quantitative and qualitative approach to identify smaller international companies that the investment manager believes have the potential to generate attractive returns with lower downside risk. Overall, the investment manager seeks to invest in growth companies with attractive valuations.

The investment manager does not select investments for the Fund that are merely representative of the small cap asset class, but instead aims to produce a portfolio of securities of exceptional companies operating in sectors that offer attractive growth potential. While the investment manager seeks to outperform the MSCI EAFE Small Cap (Net Dividends) Index, positions may be taken by the Fund that are not represented in that index.

Principal Risks

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Market

The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Stock prices tend to go up and down more dramatically than those of debt securities. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund.

Growth Style Investing

Growth stock prices reflect projections of future earnings or revenues, and can, therefore, fall dramatically if the company fails to meet those projections. Prices of these companies’ securities may be more volatile than other securities, particularly over the short term.

Foreign Securities

Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies. The risks of foreign investments may be greater in developing or emerging market countries.

Regional Focus

Because the Fund may invest at least a significant portion of its assets in companies in a specific region, including Europe, the Fund is subject to greater risks of adverse developments in that region and/or the surrounding regions than a fund that is more broadly diversified geographically. Political, social or economic disruptions in the region, even in countries in which the Fund is not invested, may adversely affect the value of investments held by the Fund. Current political uncertainty surrounding the European Union (EU) and its membership, including the 2016 referendum in which the United Kingdom voted to exit the EU, may increase market volatility. The financial instability of some countries in the EU, including Greece, Italy and Spain, together with the risk of that impacting other more stable countries may increase the economic risk of investing in companies in Europe.

Emerging Markets

The Fund's investments in emerging market countries are subject to all of the risks of foreign investing generally, and have additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation.

Smaller Companies

Securities issued by smaller companies may be more volatile in price than those of larger companies, involve substantial risks and should be considered speculative. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development and limited or less developed product lines and markets. In addition, smaller companies may be particularly affected by interest rate increases, as they may find it more difficult to borrow money to continue or expand operations, or may have difficulty in repaying any loans.

Liquidity

From time to time, the trading market for a particular security or type of security or other investments in which the Fund invests may become less liquid or even illiquid. Reduced liquidity will have an adverse impact on the Fund’s ability to sell such securities or other investments when necessary to meet the Fund’s liquidity needs or in response to a specific economic event and will also generally lower the value of a security or other investments. Market prices for such securities or other investments may be volatile.

Focus

To the extent that the Fund focuses on particular countries, regions, industries, sectors or types of investment from time to time, the Fund may be subject to greater risks of adverse developments in such areas of focus than a fund that invests in a wider variety of countries, regions, industries, sectors or investments.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Performance

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Advisor Class shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Advisor Class Annual Total Returns

Best Quarter:	Q2'09	32.65%
Worst Quarter:	Q4'08	-20.05%
As of September 30, 2017, the Fund's year-to-date return was 31.95%.

Average Annual Total Returns
(figures reflect sales charges)

For the periods ended December 31, 2016

Average Annual Total Returns{- Franklin International Small Cap Growth Fund} - Franklin Global Trust 3 - FGT3-18 - Franklin International Small Cap Growth Fund	Past 1 year	Past 5 years	Past 10 years	Since Inception	[1]
Advisor Class | Return Before Taxes	(3.17%)	10.34%	5.83%
Advisor Class | After Taxes on Distributions	(5.91%)	8.73%	3.98%
Advisor Class | After Taxes on Distributions and Sales	(0.92%)	8.08%	4.49%
Class A | Return Before Taxes	(8.96%)	8.76%	4.93%
Class C | Return Before Taxes	(5.07%)	9.25%	4.82%
Class R | Return Before Taxes	(3.68%)	9.77%	5.31%
Class R6 | Return Before Taxes	(2.98%)			3.93%
MSCI EAFE Small Cap (Net Dividends) Index (index reflects no deduction for fees, expenses or taxes [other than the deduction of withholding taxes on reinvested dividends])	2.18%	10.55%	2.95%

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018. Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018. If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

Historical performance for Class A, Class C and Class R shares prior to their inception is based on the performance of Advisor Class shares. Class A, Class C and Class R performance has been adjusted to reflect differences in sales charges and 12b-1 expenses between classes.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Advisor Class and after-tax returns for other classes will vary.

[1] There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

[2] Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date. Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes. Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods. (See “Your Account – Choosing a Shares Class – Sales Charges - Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

[1] Class C distribution and service (12b-1) fees have been restated to reflect the current fiscal year distribution and service (12b-1) fees.

[1] Since inception May 1, 2013.

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FRANKLIN GLOBAL TRUST

Prospectus Date

rr_ProspectusDate

Sep. 10, 2018

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund

Risk/Return:

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Goal

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Long-term capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 48 in the Fund's Prospectus and under “Buying and Selling Shares” on page 44 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A - "Intermediary Sales Charge Discounts and Waivers" to the Fund's prospectus.

Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class R6 or Advisor Class shares.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 21.71% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

21.71%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. 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, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

If you do not sell your shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests at least 80% of its net assets in a diversified portfolio of marketable equity and equity-related securities of smaller international companies. Smaller international companies are companies with market capitalizations not exceeding (i) $5 billion or the equivalent in local currencies or (ii) the highest market capitalization in the Morgan Stanley Capital International (MSCI) Europe, Australasia, Far East (EAFE) Small Cap Index, whichever is greater, at the time of purchase. The equity securities in which the Fund primarily invests are common stock.

The Fund's investment manager generally intends to maintain a more focused portfolio consisting of approximately 25-45 securities. The Fund, from time to time, may have significant investments in a particular sector or country.

In choosing individual equity investments, the Fund's investment manager utilizes a fundamental "bottom-up" approach involving in-depth proprietary analysis of individual equity securities. In narrowing down the universe of eligible investments, the investment manager employs a quantitative and qualitative approach to identify smaller international companies that the investment manager believes have the potential to generate attractive returns with lower downside risk. Overall, the investment manager seeks to invest in growth companies with attractive valuations.

The investment manager does not select investments for the Fund that are merely representative of the small cap asset class, but instead aims to produce a portfolio of securities of exceptional companies operating in sectors that offer attractive growth potential. While the investment manager seeks to outperform the MSCI EAFE Small Cap (Net Dividends) Index, positions may be taken by the Fund that are not represented in that index.

Strategy Portfolio Concentration [Text]

rr_StrategyPortfolioConcentration

Under normal market conditions, the Fund invests at least 80% of its net assets in a diversified portfolio of marketable equity and equity-related securities of smaller international companies.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Market

The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Stock prices tend to go up and down more dramatically than those of debt securities. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund.

Growth Style Investing

Growth stock prices reflect projections of future earnings or revenues, and can, therefore, fall dramatically if the company fails to meet those projections. Prices of these companies’ securities may be more volatile than other securities, particularly over the short term.

Foreign Securities

Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies. The risks of foreign investments may be greater in developing or emerging market countries.

Regional Focus

Because the Fund may invest at least a significant portion of its assets in companies in a specific region, including Europe, the Fund is subject to greater risks of adverse developments in that region and/or the surrounding regions than a fund that is more broadly diversified geographically. Political, social or economic disruptions in the region, even in countries in which the Fund is not invested, may adversely affect the value of investments held by the Fund. Current political uncertainty surrounding the European Union (EU) and its membership, including the 2016 referendum in which the United Kingdom voted to exit the EU, may increase market volatility. The financial instability of some countries in the EU, including Greece, Italy and Spain, together with the risk of that impacting other more stable countries may increase the economic risk of investing in companies in Europe.

Emerging Markets

The Fund's investments in emerging market countries are subject to all of the risks of foreign investing generally, and have additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation.

Smaller Companies

Securities issued by smaller companies may be more volatile in price than those of larger companies, involve substantial risks and should be considered speculative. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development and limited or less developed product lines and markets. In addition, smaller companies may be particularly affected by interest rate increases, as they may find it more difficult to borrow money to continue or expand operations, or may have difficulty in repaying any loans.

Liquidity

From time to time, the trading market for a particular security or type of security or other investments in which the Fund invests may become less liquid or even illiquid. Reduced liquidity will have an adverse impact on the Fund’s ability to sell such securities or other investments when necessary to meet the Fund’s liquidity needs or in response to a specific economic event and will also generally lower the value of a security or other investments. Market prices for such securities or other investments may be volatile.

Focus

To the extent that the Fund focuses on particular countries, regions, industries, sectors or types of investment from time to time, the Fund may be subject to greater risks of adverse developments in such areas of focus than a fund that invests in a wider variety of countries, regions, industries, sectors or investments.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Advisor Class shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Advisor Class shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) DIAL BEN/342-5236

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

franklintempleton.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Advisor Class Annual Total Returns

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:	Q2'09	32.65%
Worst Quarter:	Q4'08	-20.05%
As of September 30, 2017, the Fund's year-to-date return was 31.95%.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
(figures reflect sales charges)

For the periods ended December 31, 2016

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018. Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018. If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

Historical performance for Class A, Class C and Class R shares prior to their inception is based on the performance of Advisor Class shares. Class A, Class C and Class R performance has been adjusted to reflect differences in sales charges and 12b-1 expenses between classes.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Advisor Class and after-tax returns for other classes will vary.

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

^[1]

Management fees

rr_ManagementFeesOverAssets

0.95%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.24%

Other expenses

rr_OtherExpensesOverAssets

0.19%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.38%

1 year

rr_ExpenseExampleYear01

$ 683

3 years

rr_ExpenseExampleYear03

963

5 years

rr_ExpenseExampleYear05

1,264

10 years

rr_ExpenseExampleYear10

$ 2,116

Year to Date Return, Label

rr_YearToDateReturnLabel

As of September 30, 2017, the Fund's year-to-date return was 31.95%.

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2009

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

32.65%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Dec. 31, 2008

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(20.05%)

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

^[2]

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

^[2]

Management fees

rr_ManagementFeesOverAssets

0.95%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

^[3]

Other expenses

rr_OtherExpensesOverAssets

0.19%

Total annual Fund operating expenses

rr_ExpensesOverAssets

2.14%

1 year

rr_ExpenseExampleYear01

$ 317

3 years

rr_ExpenseExampleYear03

670

5 years

rr_ExpenseExampleYear05

1,149

10 years

rr_ExpenseExampleYear10

2,472

1 Year

rr_ExpenseExampleNoRedemptionYear01

217

3 Years

rr_ExpenseExampleNoRedemptionYear03

670

5 Years

rr_ExpenseExampleNoRedemptionYear05

1,149

10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 2,472

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Class R

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

0.95%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other expenses

rr_OtherExpensesOverAssets

0.19%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.64%

1 year

rr_ExpenseExampleYear01

$ 167

3 years

rr_ExpenseExampleYear03

517

5 years

rr_ExpenseExampleYear05

892

10 years

rr_ExpenseExampleYear10

$ 1,944

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Class R6

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

0.95%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.04%

Total annual Fund operating expenses

rr_ExpensesOverAssets

0.99%

1 year

rr_ExpenseExampleYear01

$ 101

3 years

rr_ExpenseExampleYear03

315

5 years

rr_ExpenseExampleYear05

547

10 years

rr_ExpenseExampleYear10

$ 1,213

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

0.95%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.19%

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.14%

1 year

rr_ExpenseExampleYear01

$ 116

3 years

rr_ExpenseExampleYear03

362

5 years

rr_ExpenseExampleYear05

628

10 years

rr_ExpenseExampleYear10

$ 1,386

2007

rr_AnnualReturn2007

8.48%

2008

rr_AnnualReturn2008

(37.35%)

2009

rr_AnnualReturn2009

55.65%

2010

rr_AnnualReturn2010

18.97%

2011

rr_AnnualReturn2011

(14.34%)

2012

rr_AnnualReturn2012

29.78%

2013

rr_AnnualReturn2013

36.64%

2014

rr_AnnualReturn2014

(10.74%)

2015

rr_AnnualReturn2015

6.70%

2016

rr_AnnualReturn2016

(3.17%)

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

(8.96%)

Past 5 years

rr_AverageAnnualReturnYear05

8.76%

Past 10 years

rr_AverageAnnualReturnYear10

4.93%

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

(5.07%)

Past 5 years

rr_AverageAnnualReturnYear05

9.25%

Past 10 years

rr_AverageAnnualReturnYear10

4.82%

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Return Before Taxes | Class R

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

(3.68%)

Past 5 years

rr_AverageAnnualReturnYear05

9.77%

Past 10 years

rr_AverageAnnualReturnYear10

5.31%

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Return Before Taxes | Class R6

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

(2.98%)

Past 10 years

rr_AverageAnnualReturnYear10

Since Inception

rr_AverageAnnualReturnSinceInception

3.93%

^[4]

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | Return Before Taxes | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin International Small Cap Growth Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

(3.17%)

Past 5 years

rr_AverageAnnualReturnYear05

10.34%

Past 10 years

rr_AverageAnnualReturnYear10

5.83%

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | After Taxes on Distributions | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin International Small Cap Growth Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

(5.91%)

Past 5 years

rr_AverageAnnualReturnYear05

8.73%

Past 10 years

rr_AverageAnnualReturnYear10

3.98%

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | After Taxes on Distributions and Sales | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin International Small Cap Growth Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

(0.92%)

Past 5 years

rr_AverageAnnualReturnYear05

8.08%

Past 10 years

rr_AverageAnnualReturnYear10

4.49%

Franklin Global Trust 3 - FGT3-18 | Franklin International Small Cap Growth Fund | MSCI EAFE Small Cap (Net Dividends) Index (index reflects no deduction for fees, expenses or taxes [other than the deduction of withholding taxes on reinvested dividends])

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

2.18%

Past 5 years

rr_AverageAnnualReturnYear05

10.55%

Past 10 years

rr_AverageAnnualReturnYear10

2.95%

[1] There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

[2] Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date. Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes. Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods. (See “Your Account – Choosing a Shares Class – Sales Charges - Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

[3] Class C distribution and service (12b-1) fees have been restated to reflect the current fiscal year distribution and service (12b-1) fees.

[4] Since inception May 1, 2013.

XML

Fund Summary

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund

Investment Goal

Total investment return consisting of income and capital appreciation.

Fees and Expenses of the Fund

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 35 in the Fund's Prospectus and under “Buying and Selling Shares” on page 56 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A - "Intermediary Sales Charge Discounts and Waivers" to the Fund's prospectus.

Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class R6 or Advisor Class shares.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees {- Franklin Global Listed Infrastructure Fund} - Franklin Global Listed Infrastructure Fund-11 - Franklin Global Listed Infrastructure Fund	Class A	[1]	Class C	[2]	Class R	Class R6	Advisor Class
Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)	5.50%		none		none	none	none
Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)	none		1.00%		none	none	none

Annual Fund Operating Expenses

(expenses that you pay each year as a percentage of the value of your investment)

Annual Operating Expenses {- Franklin Global Listed Infrastructure Fund} - Franklin Global Listed Infrastructure Fund-11 - Franklin Global Listed Infrastructure Fund		Class A	Class C	Class R		Class R6	Advisor Class
Management fees		1.00%	1.00%	1.00%		1.00%	1.00%
Distribution and service (12b-1) fees		0.25%	1.00%	0.50%	[1]	none	none
Other expenses	[2]	0.74%	0.74%	0.74%		1.31%	0.74%
Total annual Fund operating expenses		1.99%	2.74%	2.24%		2.31%	1.74%
Fee waiver and/or expense reimbursement	[2]	(0.75%)	(0.75%)	(0.75%)		(1.49%)	(0.75%)
Total annual Fund operating expenses after fee waiver and/or expense reimbursement	[2]	1.24%	1.99%	1.49%		0.82%	0.99%

Example

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example {- Franklin Global Listed Infrastructure Fund} - Franklin Global Listed Infrastructure Fund-11 - Franklin Global Listed Infrastructure Fund - USD ($)	Class A	Class C	Class R	Class R6	Advisor Class
1 year	$ 669	$ 302	$ 152	$ 84	$ 101
3 years	1,071	779	628	578	475
5 years	1,498	1,383	1,132	1,099	873
10 years	$ 2,682	$ 3,016	$ 2,516	$ 2,530	$ 1,989

If you do not sell your shares:

Expense Example, No Redemption {- Franklin Global Listed Infrastructure Fund}	Franklin Global Listed Infrastructure Fund-11 Franklin Global Listed Infrastructure Fund Class C USD ($)
1 Year	$ 202
3 Years	779
5 Years	1,383
10 Years	$ 3,016

Portfolio Turnover

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 Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 71.81% of the average value of its portfolio.

Principal Investment Strategies

Under normal market conditions, the Fund invests at least 80% of its net assets in securities listed on a domestic or foreign exchange of companies that are located around the world (including emerging markets) and whose principal business is the ownership, management, construction, operation, use or financing of infrastructure assets. Under normal market conditions, the Fund expects to invest at least 40% of its net assets in foreign securities. The Fund may invest up to 20% of its net assets in emerging markets and may invest in infrastructure-related companies of any market capitalization size.

The Fund defines an infrastructure-related company as any company that derives at least 50% of its revenue or profits from the ownership, management, construction, operation, use or financing of infrastructure assets. Infrastructure assets are the physical structures, networks and systems relating to transportation, energy, water and sewage, and communication (including, for example toll roads; bridges and tunnels; airports; seaports; electricity generation including, but not limited to, renewable energy generation assets; electricity transmission lines and distribution; gathering, treating, processing, fractionation, transportation and storage of hydrocarbon products (e.g., oil and gas); water and sewage treatment and distribution pipelines; communication towers and satellites; and railroads).

The Fund may invest in all types of equity securities, which may include common and preferred stock, and income trusts, which are issued by infrastructure-related companies. Other Fund investments may include depositary receipts. While the Fund does not concentrate in any one country or region, from time to time, based on economic conditions, it may make significant investments in certain countries or regions.

For purposes of pursuing its investment goal, the Fund may, from time to time, enter into various transactions involving derivative instruments, including currency forwards and futures contracts, which may be used to help manage currency risks and manage local currency exposure.

When selecting investments for the Fund’s portfolio, the investment manager applies a “bottom-up” stock selection process that incorporates macro-level views in the evaluation process. The investment manager’s portfolio construction process combines: bottom-up analysis of individual stock and infrastructure market fundamentals; and top-down macro overlays to provide country/regional, infrastructure sector, and company size perspectives in identifying international/local cyclical and thematic trends that highlight investment opportunities. The investment manager applies a similar process when determining which securities to sell. In this process, the investment manager may sell a security when it has become overvalued due to either its price appreciation or changes in the company's fundamentals, or when the investment manager believes another security is a more attractive investment opportunity in light of the Fund’s overall portfolio.

Principal Risks

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Infrastructure-Related Companies

Infrastructure-related companies may be subject to a variety of factors that may adversely affect their business or operations, including high interest costs in connection with capital construction programs, high leverage, costs associated with environmental and other regulations, the effects of economic slowdown, surplus capacity, increased competition from other providers of services, uncertainties concerning the availability of fuel at reasonable prices, the effects of energy conservation policies and other factors. Other factors that may affect the operations of infrastructure-related companies include difficulty in raising capital in adequate amounts on reasonable terms in periods of high inflation and unsettled capital markets, inexperience with and potential losses resulting from a developing deregulatory environment, increased susceptibility to terrorist acts or political actions, and general changes in market sentiment towards infrastructure assets.

Foreign Securities

Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies. The risks of foreign investments may be greater in developing or emerging market countries.

Regional Focus

Because the Fund may invest at least a significant portion of its assets in companies in a specific region, including Europe, the Fund is subject to greater risks of adverse developments in that region and/or the surrounding regions than a fund that is more broadly diversified geographically. Political, social or economic disruptions in the region, even in countries in which the Fund is not invested, may adversely affect the value of investments held by the Fund. Current political uncertainty surrounding the European Union (EU) and its membership, including the 2016 referendum in which the United Kingdom voted to exit the EU, may increase market volatility. The financial instability of some countries in the EU, including Greece, Italy and Spain, together with the risk of that impacting other more stable countries may increase the economic risk of investing in companies in Europe.

Utilities Industry

Utility company equity securities, to the extent they are purchased for their dividend yield, historically have been sensitive to interest rate movements: when interest rates have risen, the stock prices of these companies have tended to fall. In some states of the United States and certain countries, utility companies and their rates are regulated; other states and countries have moved to deregulate such companies thereby causing non-regulated companies’ returns to generally be more volatile and more sensitive to changes in revenue and earnings. Certain utilities companies face risks associated with the operation of nuclear facilities for electric generation, including, among other considerations, litigation, the problems associated with the use of radioactive materials; the effects of natural or man-made disasters; and the potential for government decommissioning. In general, all utility companies may face additional regulation and litigation regarding their power plant operations; increased costs from new or greater regulation of these operations; the need to purchase expensive emissions control equipment or new operations due to regulations; and the availability and cost of fuel, all of which may lower their earnings.

Concentration

By focusing on an industry or a group of industries, the Fund carries much greater risks of adverse developments and price movements in such industries than a fund that invests in a wider variety of industries. Because the Fund concentrates in a specific industry or group of industries, there is also the risk that the Fund will perform poorly during a slump in demand for securities of companies in such industries.

Market

The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Stock prices tend to go up and down more dramatically than those of debt securities. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund.

Emerging Markets

The Fund’s investments in emerging market countries are subject to all of the risks of foreign investing generally, and have additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation.

Smaller and Midsize Companies

Securities issued by smaller and midsize companies may be more volatile in price than those of larger companies, involve substantial risks and should be considered speculative. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development, and limited or less developed product lines and markets. In addition, smaller and midsize companies may be particularly affected by interest rate increases, as they may find it more difficult to borrow money to continue or expand operations, or may have difficulty in repaying any loans.

Derivative Instruments

The performance of derivative instruments depends largely on the performance of an underlying instrument and such instruments often have risks similar to the underlying instrument, in addition to other risks. Other risks include illiquidity, mispricing or improper valuation of the derivative instrument, and imperfect correlation between the value of the derivative and the underlying instrument so that the Fund may not realize the intended benefits. When a derivative is used for hedging, the change in value of the derivative may also not correlate specifically with the currency or other risk being hedged. Derivatives also may present the risk that the other party to the transaction will fail to perform.

Currency Management Strategies

Currency management strategies may substantially change the Fund’s exposure to currency exchange rates and could result in losses to the Fund if currencies do not perform as the investment manager expects. In addition, currency management strategies, to the extent that they reduce the Fund’s exposure to currency risks, may also reduce the Fund’s ability to benefit from favorable changes in currency exchange rates. Using currency management strategies for purposes other than hedging further increases the Fund’s exposure to foreign investment losses. Currency markets generally are not as regulated as securities markets. In addition, currency rates may fluctuate significantly over short periods of time, and can reduce returns.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Performance

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Class A Annual Total Returns

Best Quarter:	Q2'14	9.33%
Worst Quarter:	Q3'15	-7.56%
As of September 30, 2017, the Fund's year-to-date return was 19.97%.

Average Annual Total Returns
(figures reflect sales charges)

For the periods ended December 31, 2016

Average Annual Total Returns{- Franklin Global Listed Infrastructure Fund} - Franklin Global Listed Infrastructure Fund-11 - Franklin Global Listed Infrastructure Fund	Past 1 year	Since Inception	Inception Date
Class A			Sep. 06, 2013
Class A | Return Before Taxes	2.99%	4.58%
Class A | After Taxes on Distributions	2.69%	4.06%	Sep. 06, 2013
Class A | After Taxes on Distributions and Sales	2.20%	3.56%	Sep. 06, 2013
Class C			Sep. 06, 2013
Class C | Return Before Taxes	7.42%	5.68%
Class R			Sep. 06, 2013
Class R | Return Before Taxes	8.94%	6.19%
Class R6			Sep. 06, 2013
Class R6 | Return Before Taxes	9.74%	6.86%
Advisor Class			Sep. 06, 2013
Advisor Class | Return Before Taxes	9.48%	6.74%
S&P Global Infrastructure Index (index reflects no deduction for fees, expenses or taxes)	12.43%	6.44%

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018. Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018. If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Class A and after-tax returns for other classes will vary.

[1] There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

[2] Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date. Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes. Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods. (See “Your Account – Choosing a Shares Class – Sales Charges - Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

[1] Class R distribution and service (12b-1) fees have been restated to reflect the maximum annual contractual rate for the current fiscal year. Consequently, the “Total annual Fund operating expenses” and “Total annual Fund operating expenses after fee waiver and/or expense reimbursement” line items differ from the ratios of expenses to average net assets shown in the Financial Highlights.

[2] The fee waiver and/or expense reimbursement above has been updated to reflect that the investment manager has contractually agreed to waive or assume certain expenses so that total annual Fund operating expenses (excluding Rule 12b‑1 fees, acquired fund fees and expenses and certain non-routine expenses) for each class of the Fund do not exceed 0.99% through November 30, 2019. In addition, the transfer agent also has contractually agreed to cap transfer agency fees for Class R6 shares of the Fund so that transfer agency fees for that class do not exceed 0.03% until November 30, 2019. Contractual fee waiver and/or expense reimbursement agreements may not be changed or terminated during the time period set forth above..

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Registrant Name

dei_EntityRegistrantName

FRANKLIN GLOBAL TRUST

Prospectus Date

rr_ProspectusDate

Sep. 10, 2018

Risk/Return [Heading]

rr_RiskReturnHeading

Fund Summary

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund

Risk/Return:

rr_RiskReturnAbstract

Objective [Heading]

rr_ObjectiveHeading

Investment Goal

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Total investment return consisting of income and capital appreciation.

Expense [Heading]

rr_ExpenseHeading

Fees and Expenses of the Fund

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

These tables describe the fees and expenses that you may pay if you buy and hold shares of the Fund. You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds. More information about these and other discounts is available from your financial professional and under “Your Account” on page 35 in the Fund's Prospectus and under “Buying and Selling Shares” on page 56 of the Fund’s Statement of Additional Information. In addition, more information about sales charge discounts and waivers for purchases of shares through specific financial intermediaries is set forth in Appendix A - "Intermediary Sales Charge Discounts and Waivers" to the Fund's prospectus.

Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling Class R6 or Advisor Class shares.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

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 Fund shares are held in a taxable account. These costs, which are not reflected in annual Fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 71.81% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

71.81%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts in Class A if you and your family invest, or agree to invest in the future, at least $50,000 in Franklin Templeton funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

$ 50,000

Expense Example [Heading]

rr_ExpenseExampleHeading

Example

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

If you do not sell your shares:

Strategy [Heading]

rr_StrategyHeading

Principal Investment Strategies

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Under normal market conditions, the Fund invests at least 80% of its net assets in securities listed on a domestic or foreign exchange of companies that are located around the world (including emerging markets) and whose principal business is the ownership, management, construction, operation, use or financing of infrastructure assets. Under normal market conditions, the Fund expects to invest at least 40% of its net assets in foreign securities. The Fund may invest up to 20% of its net assets in emerging markets and may invest in infrastructure-related companies of any market capitalization size.

The Fund defines an infrastructure-related company as any company that derives at least 50% of its revenue or profits from the ownership, management, construction, operation, use or financing of infrastructure assets. Infrastructure assets are the physical structures, networks and systems relating to transportation, energy, water and sewage, and communication (including, for example toll roads; bridges and tunnels; airports; seaports; electricity generation including, but not limited to, renewable energy generation assets; electricity transmission lines and distribution; gathering, treating, processing, fractionation, transportation and storage of hydrocarbon products (e.g., oil and gas); water and sewage treatment and distribution pipelines; communication towers and satellites; and railroads).

The Fund may invest in all types of equity securities, which may include common and preferred stock, and income trusts, which are issued by infrastructure-related companies. Other Fund investments may include depositary receipts. While the Fund does not concentrate in any one country or region, from time to time, based on economic conditions, it may make significant investments in certain countries or regions.

For purposes of pursuing its investment goal, the Fund may, from time to time, enter into various transactions involving derivative instruments, including currency forwards and futures contracts, which may be used to help manage currency risks and manage local currency exposure.

When selecting investments for the Fund’s portfolio, the investment manager applies a “bottom-up” stock selection process that incorporates macro-level views in the evaluation process. The investment manager’s portfolio construction process combines: bottom-up analysis of individual stock and infrastructure market fundamentals; and top-down macro overlays to provide country/regional, infrastructure sector, and company size perspectives in identifying international/local cyclical and thematic trends that highlight investment opportunities. The investment manager applies a similar process when determining which securities to sell. In this process, the investment manager may sell a security when it has become overvalued due to either its price appreciation or changes in the company's fundamentals, or when the investment manager believes another security is a more attractive investment opportunity in light of the Fund’s overall portfolio.

Risk [Heading]

rr_RiskHeading

Principal Risks

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

You could lose money by investing in the Fund. Mutual fund shares are not deposits or obligations of, or guaranteed or endorsed by, any bank, and are not insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board, or any other agency of the U.S. government.

Infrastructure-Related Companies

Infrastructure-related companies may be subject to a variety of factors that may adversely affect their business or operations, including high interest costs in connection with capital construction programs, high leverage, costs associated with environmental and other regulations, the effects of economic slowdown, surplus capacity, increased competition from other providers of services, uncertainties concerning the availability of fuel at reasonable prices, the effects of energy conservation policies and other factors. Other factors that may affect the operations of infrastructure-related companies include difficulty in raising capital in adequate amounts on reasonable terms in periods of high inflation and unsettled capital markets, inexperience with and potential losses resulting from a developing deregulatory environment, increased susceptibility to terrorist acts or political actions, and general changes in market sentiment towards infrastructure assets.

Foreign Securities

Investing in foreign securities typically involves more risks than investing in U.S. securities, and includes risks associated with: (i) internal and external political and economic developments – e.g., the political, economic and social policies and structures of some foreign countries may be less stable and more volatile than those in the U.S. or some foreign countries may be subject to trading restrictions or economic sanctions; (ii) trading practices – e.g., government supervision and regulation of foreign securities and currency markets, trading systems and brokers may be less than in the U.S.; (iii) availability of information – e.g., foreign issuers may not be subject to the same disclosure, accounting and financial reporting standards and practices as U.S. issuers; (iv) limited markets – e.g., the securities of certain foreign issuers may be less liquid (harder to sell) and more volatile; and (v) currency exchange rate fluctuations and policies. The risks of foreign investments may be greater in developing or emerging market countries.

Regional Focus

Because the Fund may invest at least a significant portion of its assets in companies in a specific region, including Europe, the Fund is subject to greater risks of adverse developments in that region and/or the surrounding regions than a fund that is more broadly diversified geographically. Political, social or economic disruptions in the region, even in countries in which the Fund is not invested, may adversely affect the value of investments held by the Fund. Current political uncertainty surrounding the European Union (EU) and its membership, including the 2016 referendum in which the United Kingdom voted to exit the EU, may increase market volatility. The financial instability of some countries in the EU, including Greece, Italy and Spain, together with the risk of that impacting other more stable countries may increase the economic risk of investing in companies in Europe.

Utilities Industry

Utility company equity securities, to the extent they are purchased for their dividend yield, historically have been sensitive to interest rate movements: when interest rates have risen, the stock prices of these companies have tended to fall. In some states of the United States and certain countries, utility companies and their rates are regulated; other states and countries have moved to deregulate such companies thereby causing non-regulated companies’ returns to generally be more volatile and more sensitive to changes in revenue and earnings. Certain utilities companies face risks associated with the operation of nuclear facilities for electric generation, including, among other considerations, litigation, the problems associated with the use of radioactive materials; the effects of natural or man-made disasters; and the potential for government decommissioning. In general, all utility companies may face additional regulation and litigation regarding their power plant operations; increased costs from new or greater regulation of these operations; the need to purchase expensive emissions control equipment or new operations due to regulations; and the availability and cost of fuel, all of which may lower their earnings.

Concentration

By focusing on an industry or a group of industries, the Fund carries much greater risks of adverse developments and price movements in such industries than a fund that invests in a wider variety of industries. Because the Fund concentrates in a specific industry or group of industries, there is also the risk that the Fund will perform poorly during a slump in demand for securities of companies in such industries.

Market

The market values of securities or other investments owned by the Fund will go up or down, sometimes rapidly or unpredictably. The market value of a security or other investment may be reduced by market activity or other results of supply and demand unrelated to the issuer. This is a basic risk associated with all investments. When there are more sellers than buyers, prices tend to fall. Likewise, when there are more buyers than sellers, prices tend to rise.

Stock prices tend to go up and down more dramatically than those of debt securities. A slower-growth or recessionary economic environment could have an adverse effect on the prices of the various stocks held by the Fund.

Emerging Markets

The Fund’s investments in emerging market countries are subject to all of the risks of foreign investing generally, and have additional heightened risks due to a lack of established legal, political, business and social frameworks to support securities markets, including: delays in settling portfolio securities transactions; currency and capital controls; greater sensitivity to interest rate changes; pervasiveness of corruption and crime; currency exchange rate volatility; and inflation, deflation or currency devaluation.

Smaller and Midsize Companies

Securities issued by smaller and midsize companies may be more volatile in price than those of larger companies, involve substantial risks and should be considered speculative. Such risks may include greater sensitivity to economic conditions, less certain growth prospects, lack of depth of management and funds for growth and development, and limited or less developed product lines and markets. In addition, smaller and midsize companies may be particularly affected by interest rate increases, as they may find it more difficult to borrow money to continue or expand operations, or may have difficulty in repaying any loans.

Derivative Instruments

The performance of derivative instruments depends largely on the performance of an underlying instrument and such instruments often have risks similar to the underlying instrument, in addition to other risks. Other risks include illiquidity, mispricing or improper valuation of the derivative instrument, and imperfect correlation between the value of the derivative and the underlying instrument so that the Fund may not realize the intended benefits. When a derivative is used for hedging, the change in value of the derivative may also not correlate specifically with the currency or other risk being hedged. Derivatives also may present the risk that the other party to the transaction will fail to perform.

Currency Management Strategies

Currency management strategies may substantially change the Fund’s exposure to currency exchange rates and could result in losses to the Fund if currencies do not perform as the investment manager expects. In addition, currency management strategies, to the extent that they reduce the Fund’s exposure to currency risks, may also reduce the Fund’s ability to benefit from favorable changes in currency exchange rates. Using currency management strategies for purposes other than hedging further increases the Fund’s exposure to foreign investment losses. Currency markets generally are not as regulated as securities markets. In addition, currency rates may fluctuate significantly over short periods of time, and can reduce returns.

Management

The Fund is subject to management risk because it is an actively managed investment portfolio. The Fund's investment manager applies investment techniques and risk analyses in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results.

Bar Chart and Performance Table [Heading]

rr_BarChartAndPerformanceTableHeading

Performance

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance. The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. You can obtain updated performance information at franklintempleton.com or by calling (800) DIAL BEN/342-5236.

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Performance Information Illustrates Variability of Returns [Text]

rr_PerformanceInformationIllustratesVariabilityOfReturns

The following bar chart and table provide some indication of the risks of investing in the Fund. The bar chart shows changes in the Fund's performance from year to year for Class A shares. The table shows how the Fund's average annual returns for 1 year, 5 years, 10 years or since inception, as applicable, compared with those of a broad measure of market performance.

Performance Availability Phone [Text]

rr_PerformanceAvailabilityPhone

(800) DIAL BEN/342-5236

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

franklintempleton.com

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Bar Chart [Heading]

rr_BarChartHeading

Class A Annual Total Returns

Bar Chart Does Not Reflect Sales Loads [Text]

rr_BarChartDoesNotReflectSalesLoads

Sales charges are not reflected in the bar chart, and if those charges were included, returns would be less than those shown.

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Best Quarter:	Q2'14	9.33%
Worst Quarter:	Q3'15	-7.56%
As of September 30, 2017, the Fund's year-to-date return was 19.97%.

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns
(figures reflect sales charges)

For the periods ended December 31, 2016

Performance Table Closing [Text Block]

rr_PerformanceTableClosingTextBlock

The figures in the average annual total returns table above reflect the Class A maximum front-end sales charge of 5.75% that was in effect prior to September 10, 2018. Class A shares, however, currently are subject to a maximum front-end sales charge of 5.50% effective on September 10, 2018. If the maximum front-end sales charge of 5.50% was reflected, performance for Class A in the average annual total returns table would be higher.

The after-tax returns are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor's tax situation and may differ from those shown. After-tax returns are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown only for Class A and after-tax returns for other classes will vary.

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

5.50%

^[1]

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

^[1]

Management fees

rr_ManagementFeesOverAssets

1.00%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other expenses

rr_OtherExpensesOverAssets

0.74%

^[2]

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.99%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.75%)

^[2]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.24%

^[2]

1 year

rr_ExpenseExampleYear01

$ 669

3 years

rr_ExpenseExampleYear03

1,071

5 years

rr_ExpenseExampleYear05

1,498

10 years

rr_ExpenseExampleYear10

$ 2,682

2014

rr_AnnualReturn2014

15.03%

2015

rr_AnnualReturn2015

(9.63%)

2016

rr_AnnualReturn2016

9.29%

Year to Date Return, Label

rr_YearToDateReturnLabel

As of September 30, 2017, the Fund's year-to-date return was 19.97%.

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

Best Quarter:

Highest Quarterly Return, Date

rr_BarChartHighestQuarterlyReturnDate

Jun. 30, 2014

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

9.33%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

Worst Quarter:

Lowest Quarterly Return, Date

rr_BarChartLowestQuarterlyReturnDate

Sep. 30, 2015

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(7.56%)

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 06, 2013

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

^[3]

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

^[3]

Management fees

rr_ManagementFeesOverAssets

1.00%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other expenses

rr_OtherExpensesOverAssets

0.74%

^[2]

Total annual Fund operating expenses

rr_ExpensesOverAssets

2.74%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.75%)

^[2]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.99%

^[2]

1 year

rr_ExpenseExampleYear01

$ 302

3 years

rr_ExpenseExampleYear03

779

5 years

rr_ExpenseExampleYear05

1,383

10 years

rr_ExpenseExampleYear10

3,016

1 Year

rr_ExpenseExampleNoRedemptionYear01

202

3 Years

rr_ExpenseExampleNoRedemptionYear03

779

5 Years

rr_ExpenseExampleNoRedemptionYear05

1,383

10 Years

rr_ExpenseExampleNoRedemptionYear10

$ 3,016

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 06, 2013

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Class R

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

1.00%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

^[4]

Other expenses

rr_OtherExpensesOverAssets

0.74%

^[2]

Total annual Fund operating expenses

rr_ExpensesOverAssets

2.24%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.75%)

^[2]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

1.49%

^[2]

1 year

rr_ExpenseExampleYear01

$ 152

3 years

rr_ExpenseExampleYear03

628

5 years

rr_ExpenseExampleYear05

1,132

10 years

rr_ExpenseExampleYear10

$ 2,516

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 06, 2013

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Class R6

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

1.00%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

1.31%

^[2]

Total annual Fund operating expenses

rr_ExpensesOverAssets

2.31%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(1.49%)

^[2]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.82%

^[2]

1 year

rr_ExpenseExampleYear01

$ 84

3 years

rr_ExpenseExampleYear03

578

5 years

rr_ExpenseExampleYear05

1,099

10 years

rr_ExpenseExampleYear10

$ 2,530

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 06, 2013

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) Imposed on Purchases (as percentage of offering price)

rr_MaximumCumulativeSalesChargeOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as percentage of the lower of original purchase price or sale proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management fees

rr_ManagementFeesOverAssets

1.00%

Distribution and service (12b-1) fees

rr_DistributionAndService12b1FeesOverAssets

none

Other expenses

rr_OtherExpensesOverAssets

0.74%

^[2]

Total annual Fund operating expenses

rr_ExpensesOverAssets

1.74%

Fee waiver and/or expense reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.75%)

^[2]

Total annual Fund operating expenses after fee waiver and/or expense reimbursement

rr_NetExpensesOverAssets

0.99%

^[2]

1 year

rr_ExpenseExampleYear01

$ 101

3 years

rr_ExpenseExampleYear03

475

5 years

rr_ExpenseExampleYear05

873

10 years

rr_ExpenseExampleYear10

$ 1,989

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 06, 2013

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Return Before Taxes | Class A

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin Global Listed Infrastructure Fund

Label

rr_AverageAnnualReturnLabel

Return Before Taxes

Past 1 year

rr_AverageAnnualReturnYear01

2.99%

Since Inception

rr_AverageAnnualReturnSinceInception

4.58%

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Return Before Taxes | Class C

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

7.42%

Since Inception

rr_AverageAnnualReturnSinceInception

5.68%

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Return Before Taxes | Class R

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

8.94%

Since Inception

rr_AverageAnnualReturnSinceInception

6.19%

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Return Before Taxes | Class R6

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

9.74%

Since Inception

rr_AverageAnnualReturnSinceInception

6.86%

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | Return Before Taxes | Advisor Class

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

9.48%

Since Inception

rr_AverageAnnualReturnSinceInception

6.74%

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | After Taxes on Distributions | Class A

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin Global Listed Infrastructure Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions

Past 1 year

rr_AverageAnnualReturnYear01

2.69%

Since Inception

rr_AverageAnnualReturnSinceInception

4.06%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 06, 2013

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | After Taxes on Distributions and Sales | Class A

Risk/Return:

rr_RiskReturnAbstract

Column

rr_AverageAnnualReturnColumnName

Franklin Global Listed Infrastructure Fund

Label

rr_AverageAnnualReturnLabel

Return After Taxes on Distributions and Sale of Fund Shares

Past 1 year

rr_AverageAnnualReturnYear01

2.20%

Since Inception

rr_AverageAnnualReturnSinceInception

3.56%

Inception Date

rr_AverageAnnualReturnInceptionDate

Sep. 06, 2013

Franklin Global Listed Infrastructure Fund-11 | Franklin Global Listed Infrastructure Fund | S&P Global Infrastructure Index (index reflects no deduction for fees, expenses or taxes)

Risk/Return:

rr_RiskReturnAbstract

Past 1 year

rr_AverageAnnualReturnYear01

12.43%

Since Inception

rr_AverageAnnualReturnSinceInception

6.44%

[1] There is a 1% contingent deferred sales charge that applies to investments of $1 million or more (see "Investments of $1 Million or More" under "Choosing a Share Class") and purchases by certain retirement plans without an initial sales charge on shares sold within 18 months of purchase.

[2] The fee waiver and/or expense reimbursement above has been updated to reflect that the investment manager has contractually agreed to waive or assume certain expenses so that total annual Fund operating expenses (excluding Rule 12b‑1 fees, acquired fund fees and expenses and certain non-routine expenses) for each class of the Fund do not exceed 0.99% through November 30, 2019. In addition, the transfer agent also has contractually agreed to cap transfer agency fees for Class R6 shares of the Fund so that transfer agency fees for that class do not exceed 0.03% until November 30, 2019. Contractual fee waiver and/or expense reimbursement agreements may not be changed or terminated during the time period set forth above..

[3] Effective October 5, 2018, Class C shares that have been held for 10 years or more will convert automatically into Class A shares later in the month of October 2018 and will be subject to Class A shares’ lower Rule 12b-1 fees. Thereafter, Class C shares of the Fund will convert automatically to Class A shares of the Fund on a monthly basis in the month of, or the month following, the 10-year anniversary of the Class C shares’ purchase date. Such conversions will be on the basis of the relative net asset values of the two classes, will not be subject to Class A shares’ sales charges and are not expected to be a taxable event for federal income tax purposes. Certain shares that are invested through retirement plans, omnibus accounts or in certain other instances may not automatically convert if the financial intermediary does not have the ability to track purchases to credit individual shareholders’ holding periods. (See “Your Account – Choosing a Shares Class – Sales Charges - Class C – Automatic Conversion of Class C Shares to Class A Shares After 10-Year Holding Period” for more information.)

[4] Class R distribution and service (12b-1) fees have been restated to reflect the maximum annual contractual rate for the current fiscal year. Consequently, the “Total annual Fund operating expenses” and “Total annual Fund operating expenses after fee waiver and/or expense reimbursement” line items differ from the ratios of expenses to average net assets shown in the Financial Highlights.

XML

Label	Element	Value
Risk/Return:	rr_RiskReturnAbstract
Registrant Name	dei_EntityRegistrantName	FRANKLIN GLOBAL TRUST
Prospectus Date	rr_ProspectusDate	Sep. 10, 2018
Document Creation Date	dei_DocumentCreationDate	Sep. 10, 2018