v3.26.1
Fees and Expenses
Apr. 30, 2026
Gabelli Growth Innovators ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] Expenses have been restated to reflect the current year’s expected expenses
Shareholder Fees [Table]
Shareholder Fees
(fees paid directly from your investment):		       None    
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.90 %  
Total Annual Fund Operating Expenses(1)       0.90 %  
Less Fee Waiver and/or Expenses Reimbursement(2)       (0.90 )%  
Total Annual Fund Operating Expenses After Fee Waiver       0.00 %  

 

 
(1) Expenses have been restated to reflect the current year’s expected expenses.
(2) The Adviser has contractually agreed to waive the Fund’s management fee of 0.90% on the first $25 million in net assets. The fee waiver agreement for the Growth Innovators Fund will continue for at least one year from the effective date of this Prospectus. This agreement may be terminated only by, or with the consent of, the Fund’s Board of Trustees.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years   5 Years   10 Years  
  $0   $202   $420   $1,047  
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Growth Innovators Fund’s portfolio turnover rate was 6% of the average value of its portfolio.
Portfolio Turnover, Rate 6.00%
Gabelli Love Our Planet & People ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.

 
Other Expenses, New Fund, Based on Estimates [Text] Other Expenses have been restated to reflect estimated amounts for the current fiscal year
Shareholder Fees [Table]
Shareholder Fees
(fees paid directly from your investment):		       None    
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.90 %  
Other Expenses(1)       0.00 %  
Total Annual Fund Operating Expenses(2)       0.90 %  

 

 
(1) Other Expenses have been restated to reflect estimated amounts for the current fiscal year.
(2) The Adviser has voluntarily agreed to waive the Fund’s management fee of 0.90% on the first $100 million in net assets through the fiscal year ending December 31, 2026.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years   5 Years   10 Years  
  $92   $288   $500   $1,110  
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Love Our Planet Fund’s portfolio turnover rate was 14% of the average value of its portfolio.
Portfolio Turnover, Rate 14.00%
Gabelli Global Technology Leaders ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] Expenses have been restated to reflect the current year’s expected expenses.
Shareholder Fees [Table]
Shareholder Fees            
(fees paid directly from your investment):       None    
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses            
(expenses that you pay each year as a percentage of the value of your investment):            
Management Fees       0.90 %  
Total Annual Fund Operating Expenses(1)       0.90 %  
Less Fee Waiver and/or Expense Reimbursement(2)       (0.90 )%  
Total Annual Fund Operating Expenses After Fee Waiver       0.00 %  

 

 
(1) Expenses have been restated to reflect the current year’s expected expenses.
(2) The Adviser has contractually agreed to waive the Fund’s management fee of 0.90% on the first $25 million in net assets. The fee waiver agreement for the Global Technology Leaders Fund will continue for at least one year following the effective date of this Prospectus. This agreement may be terminated only by, or with the consent of, the Fund’s Board of Trustees.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years   5 Years   10 Years  
  $0   $202   $420   $1,047  
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Global Technology Leader Fund’s portfolio turnover rate was 37% of the average value of its portfolio.
Portfolio Turnover, Rate 37.00%
Gabelli Commercial Aerospace and Defense ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] Expenses have been restated to reflect the current year’s expected expenses.
Shareholder Fees [Table]
Shareholder Fees
(fees paid directly from your investment):		       None    
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.90 %  
Total Annual Fund Operating Expenses(1)       0.90 %  
Less Fee Waiver and/or Expense Reimbursement(2)       (0.80 )%  
Total Annual Fund Operating Expenses After Fee Waiver(3)       0.10 %  

 

 
(1) Expenses have been restated to reflect the current year’s expected expenses.
(2) The Adviser has contractually agreed to waive the Fund’s management fee of 0.90% on the first $25 million in net assets. The fee waiver agreement for the Aerospace and Defense Fund will continue for at least one year following the effective date of this Prospectus. This agreement may be terminated only by, or with the consent of, the Fund’s Board of Trustees.
(3) Total Annual Fund Operating Expenses After Fee Waiver are based on the application of the fee waiver to the Fund’s net assets as of the date of the Prospectus, and therefore do not correlate to the Ratio to Average Net Assets of Operating Expenses Net of Waiver in the Financial Highlights section of the Prospectus. The Fund’s expense ratio after fee waiver may fluctuate during the current fiscal year based on changes in the Fund’s net assets.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods indicated and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year, and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years   5 Years   10 Years  
  $10   $206   $419   $1,034  
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Aerospace and Defense Fund’s portfolio turnover rate was 9% of the average value of its portfolio.
Portfolio Turnover, Rate 9.00%
Gabelli Financial Services Opportunities ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] Expenses have been restated to reflect the current year’s expected expenses.
Shareholder Fees Caption [Optional Text] Shareholder Fees
Shareholder Fees [Table]
Shareholder Fees            
(fees paid directly from your investment):       None    
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses(expenses that you pay each year as a percentage of the value of your investment):
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		        
 		    
Management Fees       0.90 %   
Acquired Fund Fees and Expenses       0.74 %   
Total Annual Fund Operating Expenses(1)       1.64 %   
Less Fee Waiver and/or Expense Reimbursement(2)       (0.40 )%   
Total Annual Fund Operating Expenses After Fee Waiver(3)       1.24 %   

 

 
(1) Expenses have been restated to reflect the current year’s expected expenses.
(2) The Adviser has contractually agreed to waive the Fund’s management fee of 0.90% on the first $25 million in net assets. The fee waiver agreement for the Financial Services Fund will continue for a period of no less than one year from the date of this prospectus. This agreement may be terminated only by, or with the consent of, the Fund’s Board of Trustees (the “Board”).
(3) Total Annual Fund Operating Expenses After Fee Waiver are based on the application of the fee waiver to the Fund’s net assets as of the date of the Prospectus, and therefore do not correlate to the Ratio to Average Net Assets of Operating Expenses Net of Waiver in the Financial Highlights section of the Prospectus. The Fund’s expense ratio after fee waiver may fluctuate during the current fiscal year based on changes in the Fund’s net assets.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
1 Year   3 Years   5 Years   10 Years
$126   $478   $854   $1,909
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. During the most recent fiscal year, the Financial Services Fund’s portfolio turnover rate was 31% of the average value of its portfolio.
Portfolio Turnover, Rate 31.00%
Gabelli High Income ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] Expenses have been restated to reflect the current year’s expected expenses.
Shareholder Fees [Table]
Shareholder Fees            
(fees paid directly from your investment):       None    
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.55 %  
Acquired Fund Fees and Expenses       0.01 %  
Total Annual Fund Operating Expenses(1)       0.56 %  
Less Fee Waiver and/or Expense Reimbursement(2)       (0.55 )%  
Total Annual Fund Operating Expenses After Fee Waiver       0.01 %  

 

 
(1) Expenses have been restated to reflect the current year’s expected expenses.
(2) The Adviser has contractually agreed to waive the Fund’s management fee of 0.55% for at least one year from the effective date of this prospectus, and this arrangement cannot be terminated by the Fund or the Adviser before such time. The Adviser is not permitted to recoup any such waived fees.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.
Expense Example, With Redemption [Table]
1 Year   3 Years   5 Years   10 Years
$1   $124   $258   $649
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. As the Fund commenced operations on November 17, 2025, there is no portfolio turnover information to provide at this time.
Keeley Dividend ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.
Other Expenses, New Fund, Based on Estimates [Text] Expenses have been restated to reflect the current year’s expected expenses.
Shareholder Fees [Table]
Shareholder Fees            
(fees paid directly from your investment):       None    
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):(1)		            
Management Fees       0.90 %  
Total Annual Fund Operating Expenses(2)       0.90 %  
Less Fee Waiver and/or Expense Reimbursement(3)       (0.90 )%  
Total Annual Fund Operating Expenses After Fee Waiver       0.00 %  

 

 
(1) The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
(2) Expenses have been restated to reflect the current year’s expected expenses.
(3) The Adviser has contractually agreed to waive the Fund’s management fee of 0.90% for at least one year from the effective date of this prospectus, and this arrangement cannot be terminated by the Fund or the Adviser before such time. The Adviser is not permitted to recoup any such waived fees.
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:
Expense Example, With Redemption [Table]
1 Year   3 Years   5 Years   10 Years
$0   $196   $410   $1,025
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. As the Fund commenced operations on December 8, 2025, there is no portfolio turnover information to provide at this time.
Gabelli Opportunities in Live and Sports ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below.

 
Other Expenses, New Fund, Based on Estimates [Text] Expenses have been restated to reflect the current year’s expected expenses.
Shareholder Fees [Table]
Shareholder Fees            
(fees paid directly from your investment):       None    
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment)(1)		            
Management Fees       0.90 %  
Total Annual Fund Operating Expenses(2)       0.90 %  
Less Fee Waiver and/or Expense Reimbursement(3)       (0.90 )%  
Total Annual Fund Operating Expenses After Fee Waiver       0.00 %  

 

 
(1) The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
(2) Expenses have been restated to reflect the current year’s expected expenses.
(3) The Adviser has contractually agreed to waive the Fund’s management fee of 0.90% for at least one year from the effective date of this prospectus, and this arrangement cannot be terminated by the Fund or the Adviser before such time. The Adviser is not permitted to recoup any such waived fees.
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
1 Year   3 Years   5 Years   10 Years
$0   $196   $410   $1,025
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. As the Fund commenced operations on December 31, 2025, there is no portfolio turnover information to provide at this time.
Gabelli Equity Income ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” are based on estimated amounts for the current fiscal year. As of April 30, 2025, the Fund had not yet launched.
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment):
Shareholder Fees [Table]
Shareholder Fees
(fees paid directly from your investment):		       None    
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.90 %  
Other Expenses(1)       0.00 %  
Total Annual Fund Operating Expenses       0.90 %  
Less Fee Waiver and/or Expense Reimbursement(2)       (0.90 )%  
Total Annual Fund Operating Expenses After Fee Waiver       0.00 %  

 

 
(1) “Other Expenses” are based on estimated amounts for the current fiscal year. As of April 30, 2025, the Fund had not yet launched.
(2) The Adviser has contractually agreed to waive the Fund’s management fee of 0.90% on the first $25 million in net assets. The fee waiver agreement for the Equity Income Fund will continue until at least April 30, 2026. This agreement may be terminated only by, or with the consent of, the Fund’s Board of Trustees.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds. The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years  
  $0   $197  
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. No portfolio turnover is included for the Fund because the Fund has not yet commenced operations.
Gabelli Small & Mid Cap ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” are based on estimated amounts for the current fiscal year. As of April 30, 2025, the Fund had not yet launched.
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment):
Shareholder Fees [Table]
Shareholder Fees
(fees paid directly from your investment):		       None    
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.90 %  
Other Expenses(1)       0.00 %  
Total Annual Fund Operating Expenses       0.90 %  

 

 
(1) “Other Expenses” are based on estimated amounts for the current fiscal year. As of April 30, 2025, the Fund had not yet launched.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years  
  $92   $287  

 
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. No portfolio turnover is included for the Fund because the Fund has not yet commenced operations.
Gabelli Micro Cap ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” are based on estimated amounts for the current fiscal year. As of April 30, 2025, the Fund had not yet launched.
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment):
Shareholder Fees [Table]
Shareholder Fees
(fees paid directly from your investment):		       None    
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.90 %  
Other Expenses(1)       0.00 %  
Total Annual Fund Operating Expenses       0.90 %  

 

 
(1) “Other Expenses” are based on estimated amounts for the current fiscal year. As of April 30, 2025, the Fund had not yet launched.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years  
  $92   $287  

 
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. No portfolio turnover is included for the Fund because the Fund has not yet commenced operations.
Gabelli Green Energy ETF  
Prospectus [Line Items]  
Expense Heading [Optional Text] Fees and Expenses of the Fund:
Expense Narrative [Text Block]

This table describes the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the table and example below. The investment advisory agreement between Gabelli ETFs Trust (the “Trust”) and Gabelli Funds, LLC (the “Adviser”) provides that the Adviser will pay all operating expenses of the Fund, except the management fees, interest expenses, taxes, expenses incurred with respect to the acquisition and disposition of portfolio securities and the execution of portfolio transactions, including brokerage commissions, distribution fees or expenses, litigation expenses, and any extraordinary expenses.
Other Expenses, New Fund, Based on Estimates [Text] “Other Expenses” are based on estimated amounts for the current fiscal year.
Shareholder Fees Caption [Optional Text] Shareholder Fees (fees paid directly from your investment):
Shareholder Fees [Table]
Shareholder Fees
(fees paid directly from your investment):		       None    
Operating Expenses Caption [Optional Text] Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment):
Annual Fund Operating Expenses [Table]
Annual Fund Operating Expenses
(expenses that you pay each year as a percentage of the value of your investment):		            
Management Fees       0.90 %  
Other Expenses(1)       0.00 %  
Total Annual Fund Operating Expenses       0.90 %  

 

 
(1) “Other Expenses” are based on estimated amounts for the current fiscal year.

 
Expense Example [Heading] Expense Example
Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Fund with the cost of investing in other funds.

 

The example assumes that you invest $10,000 in the Fund for the time periods shown and then sell all of your shares at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Fund’s operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

 
Expense Example, With Redemption [Table]
  1 Year   3 Years  
  $92   $287  

 
Portfolio Turnover [Heading] Portfolio Turnover
Portfolio Turnover [Text Block]

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 the Fund’s shares are held in a taxable account. These costs, which are not reflected in the annual Fund operating expenses or in the example, affect the Fund’s performance. No portfolio turnover is included for the Fund because the Fund has not yet commenced operations.