v3.25.2
Shareholder Report
 6 Months Ended
Jun. 30, 2025
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name First Trust Exchange-Traded Fund VI
Entity Central Index Key 0001552740
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2025
C000125197 [Member]  
Shareholder Report [Line Items]  
Fund Name First Trust BuyWrite Income ETF
Class Name First Trust BuyWrite Income ETF
Trading Symbol FTHI
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the First Trust BuyWrite Income ETF (the “Fund”) for the period of January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.ftportfolios.com/fund-documents/etf/FTHI. You can also request this information by contacting us at 1-800-621-1675 or info@ftportfolios.com.
Additional Information Phone Number 1-800-621-1675
Additional Information Email info@ftportfolios.com
Additional Information Website www.ftportfolios.com/fund-documents/etf/FTHI
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS?
(Based on a hypothetical $10,000 investment)
Fund Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
First Trust BuyWrite Income ETF $38 0.75%(1)
​(1)
Annualized.
Expenses Paid, Amount $ 38
Expense Ratio, Percent 0.75% [1]
Net Assets $ 1,372,041,383
Holdings Count | Holding 223
Investment Company Portfolio Turnover 32.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (As of June 30, 2025)
Fund net assets $1,372,041,383
Total number of portfolio holdings 223
Portfolio turnover rate 32%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (As of June 30, 2025)
The tables below show the investment makeup of the Fund, representing the percentage of total investments of the Fund.
Top Ten Holdings
Microsoft Corp. 7.0%
NVIDIA Corp. 6.6%
Apple, Inc. 5.5%
Amazon.com, Inc. 3.3%
Meta Platforms, Inc., Class A 3.1%
Broadcom, Inc. 2.6%
Alphabet, Inc., Class A 1.7%
JPMorgan Chase & Co. 1.6%
Alphabet, Inc., Class C 1.4%
CME Group, Inc. 1.2%
Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 7.0%
NVIDIA Corp. 6.6%
Apple, Inc. 5.5%
Amazon.com, Inc. 3.3%
Meta Platforms, Inc., Class A 3.1%
Broadcom, Inc. 2.6%
Alphabet, Inc., Class A 1.7%
JPMorgan Chase & Co. 1.6%
Alphabet, Inc., Class C 1.4%
CME Group, Inc. 1.2%
C000125204 [Member]  
Shareholder Report [Line Items]  
Fund Name First Trust Nasdaq BuyWrite Income ETF
Class Name First Trust Nasdaq BuyWrite Income ETF
Trading Symbol FTQI
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the First Trust Nasdaq BuyWrite Income ETF (the “Fund”) for the period of January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.ftportfolios.com/fund-documents/etf/FTQI. You can also request this information by contacting us at 1-800-621-1675 or info@ftportfolios.com.
Additional Information Phone Number 1-800-621-1675
Additional Information Email info@ftportfolios.com
Additional Information Website www.ftportfolios.com/fund-documents/etf/FTQI
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS?
(Based on a hypothetical $10,000 investment)
Fund Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
First Trust Nasdaq BuyWrite Income ETF $37 0.75%(1)
​(1)
Annualized.
Expenses Paid, Amount $ 37
Expense Ratio, Percent 0.75% [2]
Net Assets $ 625,904,790
Holdings Count | Holding 194
Investment Company Portfolio Turnover 38.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (As of June 30, 2025)
Fund net assets $625,904,790
Total number of portfolio holdings 194
Portfolio turnover rate 38%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (As of June 30, 2025)
The tables below show the investment makeup of the Fund, representing the percentage of total investments of the Fund.
Top Ten Holdings
Microsoft Corp. 7.4%
NVIDIA Corp. 7.1%
Apple, Inc. 6.9%
Broadcom, Inc. 4.5%
Meta Platforms, Inc., Class A 4.3%
Amazon.com, Inc. 4.1%
Netflix, Inc. 3.4%
Advanced Micro Devices, Inc. 2.9%
Tesla, Inc. 2.9%
Costco Wholesale Corp. 2.6%
Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Ten Holdings
Microsoft Corp. 7.4%
NVIDIA Corp. 7.1%
Apple, Inc. 6.9%
Broadcom, Inc. 4.5%
Meta Platforms, Inc., Class A 4.3%
Amazon.com, Inc. 4.1%
Netflix, Inc. 3.4%
Advanced Micro Devices, Inc. 2.9%
Tesla, Inc. 2.9%
Costco Wholesale Corp. 2.6%
C000200399 [Member]  
Shareholder Report [Line Items]  
Fund Name First Trust Dorsey Wright DALI Equity ETF
Class Name First Trust Dorsey Wright DALI Equity ETF
Trading Symbol DALI
Security Exchange Name NASDAQ
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the First Trust Dorsey Wright DALI Equity ETF (the “Fund”) for the period of January 1, 2025 to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.ftportfolios.com/fund-documents/etf/DALI. You can also request this information by contacting us at 1-800-621-1675 or info@ftportfolios.com.
Additional Information Phone Number 1-800-621-1675
Additional Information Email info@ftportfolios.com
Additional Information Website www.ftportfolios.com/fund-documents/etf/DALI
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS?
(Based on a hypothetical $10,000 investment)
Fund Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
First Trust Dorsey Wright DALI Equity ETF $15(1) 0.30%(1) (2)
​(1)
Excludes any Acquired Fund Fees and Expenses of underlying investment companies in which the Fund invests.
​(2)
Annualized.
Expenses Paid, Amount $ 15 [3]
Expense Ratio, Percent 0.30% [3],[4]
Net Assets $ 111,144,010
Holdings Count | Holding 8
Investment Company Portfolio Turnover 27.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (As of June 30, 2025)
Fund net assets $111,144,010
Total number of portfolio holdings 8
Portfolio turnover rate 27%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (As of June 30, 2025)
The table below shows the investment makeup of the Fund, representing the percentage of total investments of the Fund.
Top Ten Holdings
First Trust Small Cap Growth AlphaDEX® Fund 18.2%
First Trust Large Cap Growth AlphaDEX® Fund 18.0%
First Trust Dow Jones Internet Index Fund 14.1%
First Trust Financials AlphaDEX® Fund 12.8%
First Trust Industrials/Producer Durables AlphaDEX® Fund 12.8%
First Trust NASDAQ-100 Ex-Technology Sector Index Fund 12.3%
First Trust Utilities AlphaDEX® Fund 11.7%
Dreyfus Government Cash Management Fund, Institutional Shares, Class I 0.1%
Largest Holdings [Text Block]
Top Ten Holdings
First Trust Small Cap Growth AlphaDEX® Fund 18.2%
First Trust Large Cap Growth AlphaDEX® Fund 18.0%
First Trust Dow Jones Internet Index Fund 14.1%
First Trust Financials AlphaDEX® Fund 12.8%
First Trust Industrials/Producer Durables AlphaDEX® Fund 12.8%
First Trust NASDAQ-100 Ex-Technology Sector Index Fund 12.3%
First Trust Utilities AlphaDEX® Fund 11.7%
Dreyfus Government Cash Management Fund, Institutional Shares, Class I 0.1%
C000257781 [Member]  
Shareholder Report [Line Items]  
Fund Name First Trust Small Cap BuyWrite Income ETF
Class Name First Trust Small Cap BuyWrite Income ETF
Trading Symbol FTKI
Security Exchange Name NYSEArca
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the First Trust Small Cap BuyWrite Income ETF (the “Fund”) for the period of February 26, 2025 (commencement of investment operations) to June 30, 2025.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.ftportfolios.com/fund-documents/etf/FTKI. You can also request this information by contacting us at 1-800-621-1675 or info@ftportfolios.com.
Additional Information Phone Number 1-800-621-1675
Additional Information Email info@ftportfolios.com
Additional Information Website www.ftportfolios.com/fund-documents/etf/FTKI
Expenses [Text Block]
WHAT WERE THE FUND COSTS FOR THE LAST SIX MONTHS?
(Based on a hypothetical $10,000 investment)
Fund Costs of a $10,000 investment Costs paid as a percentage
of a $10,000 investment
First Trust Small Cap BuyWrite Income ETF $29(1) 0.85%(2)
​(1)
The Fund commenced investment operations on February 26, 2025. Had the Fund been in operation for a complete six months, the cost of a $10,000 investment would have been higher.
​(2)
Annualized.
Expenses Paid, Amount $ 29 [5]
Expense Ratio, Percent 0.85% [6]
Net Assets $ 938,335
Holdings Count | Holding 234
Investment Company Portfolio Turnover 63.00%
Additional Fund Statistics [Text Block]
KEY FUND STATISTICS (As of June 30, 2025)
Fund net assets $938,335
Total number of portfolio holdings 234
Portfolio turnover rate 63%
Holdings [Text Block]
WHAT DID THE FUND INVEST IN? (As of June 30, 2025)
The tables below show the investment makeup of the Fund, representing the percentage of total investments of the Fund.
Top Ten Holdings
Argan, Inc. 1.2%
Integer Holdings Corp. 1.2%
AGNC Investment Corp. 1.2%
Bentley Systems, Inc., Class B 1.1%
Agree Realty Corp. 1.1%
Monarch Casino & Resort, Inc. 1.1%
CareTrust REIT, Inc. 1.0%
Graco, Inc. 1.0%
AptarGroup, Inc. 1.0%
Stride, Inc. 1.0%
Sector Allocation
Graphical Representation - Allocation 2 Chart
Largest Holdings [Text Block]
Top Ten Holdings
Argan, Inc. 1.2%
Integer Holdings Corp. 1.2%
AGNC Investment Corp. 1.2%
Bentley Systems, Inc., Class B 1.1%
Agree Realty Corp. 1.1%
Monarch Casino & Resort, Inc. 1.1%
CareTrust REIT, Inc. 1.0%
Graco, Inc. 1.0%
AptarGroup, Inc. 1.0%
Stride, Inc. 1.0%
[1] Annualized.
[2] Annualized.
[3] Excludes any Acquired Fund Fees and Expenses of underlying investment companies in which the Fund invests.
[4] Annualized.
[5] The Fund commenced investment operations on February 26, 2025. Had the Fund been in operation for a complete six months, the cost of a $10,000 investment would have been higher.
[6] Annualized.