110001 - Disclosure - First Trust Enhanced Short Maturity ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 110002 - Disclosure - First Trust Enhanced Short Maturity ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 110003 - Disclosure - First Trust Enhanced Short Maturity ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 110004 - Disclosure - First Trust Enhanced Short Maturity ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 110005 - Disclosure - First Trust Enhanced Short Maturity ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 120010 - Disclosure - First Trust Enhanced Short Maturity ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 120020 - Disclosure - First Trust Enhanced Short Maturity ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 120030 - Disclosure - First Trust Enhanced Short Maturity ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 120040 - Disclosure - First Trust Enhanced Short Maturity ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 120045 - Disclosure - First Trust Enhanced Short Maturity ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 120050 - Disclosure - First Trust Enhanced Short Maturity ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 120060 - Disclosure - First Trust Enhanced Short Maturity ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 120070 - Disclosure - First Trust Enhanced Short Maturity ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 110000 - Disclosure - First Trust Enhanced Short Maturity ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 210001 - Disclosure - First Trust Low Duration Opportunities ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 210002 - Disclosure - First Trust Low Duration Opportunities ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 210003 - Disclosure - First Trust Low Duration Opportunities ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 210004 - Disclosure - First Trust Low Duration Opportunities ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 210005 - Disclosure - First Trust Low Duration Opportunities ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 220010 - Disclosure - First Trust Low Duration Opportunities ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 220020 - Disclosure - First Trust Low Duration Opportunities ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 220030 - Disclosure - First Trust Low Duration Opportunities ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 220040 - Disclosure - First Trust Low Duration Opportunities ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 220045 - Disclosure - First Trust Low Duration Opportunities ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 220050 - Disclosure - First Trust Low Duration Opportunities ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 220060 - Disclosure - First Trust Low Duration Opportunities ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 220070 - Disclosure - First Trust Low Duration Opportunities ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 210000 - Disclosure - First Trust Low Duration Opportunities ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 310001 - Disclosure - First Trust North American Energy Infrastructure Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 310002 - Disclosure - First Trust North American Energy Infrastructure Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 310003 - Disclosure - First Trust North American Energy Infrastructure Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 310004 - Disclosure - First Trust North American Energy Infrastructure Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 310005 - Disclosure - First Trust North American Energy Infrastructure Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 320010 - Disclosure - First Trust North American Energy Infrastructure Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 320020 - Disclosure - First Trust North American Energy Infrastructure Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 320030 - Disclosure - First Trust North American Energy Infrastructure Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 320040 - Disclosure - First Trust North American Energy Infrastructure Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 320045 - Disclosure - First Trust North American Energy Infrastructure Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 320050 - Disclosure - First Trust North American Energy Infrastructure Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 320060 - Disclosure - First Trust North American Energy Infrastructure Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 320070 - Disclosure - First Trust North American Energy Infrastructure Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 310000 - Disclosure - First Trust North American Energy Infrastructure Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 410001 - Disclosure - First Trust Senior Loan Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 410002 - Disclosure - First Trust Senior Loan Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 410003 - Disclosure - First Trust Senior Loan Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 410004 - Disclosure - First Trust Senior Loan Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 410005 - Disclosure - First Trust Senior Loan Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 420010 - Disclosure - First Trust Senior Loan Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 420020 - Disclosure - First Trust Senior Loan Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 420030 - Disclosure - First Trust Senior Loan Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 420040 - Disclosure - First Trust Senior Loan Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 420045 - Disclosure - First Trust Senior Loan Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 420050 - Disclosure - First Trust Senior Loan Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 420060 - Disclosure - First Trust Senior Loan Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 420070 - Disclosure - First Trust Senior Loan Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 410000 - Disclosure - First Trust Senior Loan Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 510001 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 510002 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 510003 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 510004 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 510005 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 520010 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 520020 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 520030 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 520040 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 520045 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 520050 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 520060 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 520070 - Disclosure - First Trust SSI Strategic Convertible Securities ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 510000 - Disclosure - First Trust SSI Strategic Convertible Securities ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 610001 - Disclosure - First Trust Tactical High Yield ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 610002 - Disclosure - First Trust Tactical High Yield ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 610003 - Disclosure - First Trust Tactical High Yield ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 610004 - Disclosure - First Trust Tactical High Yield ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 610005 - Disclosure - First Trust Tactical High Yield ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 620010 - Disclosure - First Trust Tactical High Yield ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 620020 - Disclosure - First Trust Tactical High Yield ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 620030 - Disclosure - First Trust Tactical High Yield ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 620040 - Disclosure - First Trust Tactical High Yield ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 620045 - Disclosure - First Trust Tactical High Yield ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 620050 - Disclosure - First Trust Tactical High Yield ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 620060 - Disclosure - First Trust Tactical High Yield ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 620070 - Disclosure - First Trust Tactical High Yield ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 610000 - Disclosure - First Trust Tactical High Yield ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 710001 - Disclosure - First Trust Long Duration Opportunities ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 710002 - Disclosure - First Trust Long Duration Opportunities ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 710003 - Disclosure - First Trust Long Duration Opportunities ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 710004 - Disclosure - First Trust Long Duration Opportunities ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 710005 - Disclosure - First Trust Long Duration Opportunities ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 720010 - Disclosure - First Trust Long Duration Opportunities ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 720020 - Disclosure - First Trust Long Duration Opportunities ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 720030 - Disclosure - First Trust Long Duration Opportunities ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 720040 - Disclosure - First Trust Long Duration Opportunities ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 720045 - Disclosure - First Trust Long Duration Opportunities ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 720050 - Disclosure - First Trust Long Duration Opportunities ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 720060 - Disclosure - First Trust Long Duration Opportunities ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 720070 - Disclosure - First Trust Long Duration Opportunities ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 710000 - Disclosure - First Trust Long Duration Opportunities ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 810001 - Disclosure - First Trust EIP Power Solutions ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 810002 - Disclosure - First Trust EIP Power Solutions ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 810003 - Disclosure - First Trust EIP Power Solutions ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 810004 - Disclosure - First Trust EIP Power Solutions ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 810005 - Disclosure - First Trust EIP Power Solutions ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 820010 - Disclosure - First Trust EIP Power Solutions ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 820020 - Disclosure - First Trust EIP Power Solutions ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 820030 - Disclosure - First Trust EIP Power Solutions ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 820040 - Disclosure - First Trust EIP Power Solutions ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 820045 - Disclosure - First Trust EIP Power Solutions ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 820050 - Disclosure - First Trust EIP Power Solutions ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 820060 - Disclosure - First Trust EIP Power Solutions ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 820070 - Disclosure - First Trust EIP Power Solutions ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 810000 - Disclosure - First Trust EIP Power Solutions ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 910001 - Disclosure - First Trust High Income Strategic Focus ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 910002 - Disclosure - First Trust High Income Strategic Focus ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 910003 - Disclosure - First Trust High Income Strategic Focus ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 910004 - Disclosure - First Trust High Income Strategic Focus ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 910005 - Disclosure - First Trust High Income Strategic Focus ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 920010 - Disclosure - First Trust High Income Strategic Focus ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 920020 - Disclosure - First Trust High Income Strategic Focus ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 920030 - Disclosure - First Trust High Income Strategic Focus ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 920040 - Disclosure - First Trust High Income Strategic Focus ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 920045 - Disclosure - First Trust High Income Strategic Focus ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 920050 - Disclosure - First Trust High Income Strategic Focus ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 920060 - Disclosure - First Trust High Income Strategic Focus ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 920070 - Disclosure - First Trust High Income Strategic Focus ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 910000 - Disclosure - First Trust High Income Strategic Focus ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1010001 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1010002 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1010003 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1010004 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 1010005 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 1020010 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1020020 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1020030 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 1020040 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1020045 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 1020050 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1020060 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1020070 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1010000 - Disclosure - FT Vest SandP 500 Dividend Aristocrats Target Income ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1110001 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1110002 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1110003 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1110004 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 1110005 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 1120010 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1120020 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1120030 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 1120040 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1120045 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 1120050 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1120060 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1120070 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1110000 - Disclosure - First Trust Limited Duration Investment Grade Corporation ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1210001 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1210002 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1210003 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1210004 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 1210005 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 1220010 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1220020 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1220030 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 1220040 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1220045 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 1220050 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1220060 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1220070 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1210000 - Disclosure - FT Vest Rising Dividend Achievers Target Income ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1310001 - Disclosure - FT Energy Income Partners Strategy ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1310002 - Disclosure - FT Energy Income Partners Strategy ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1310003 - Disclosure - FT Energy Income Partners Strategy ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1310004 - Disclosure - FT Energy Income Partners Strategy ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 1310005 - Disclosure - FT Energy Income Partners Strategy ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 1320010 - Disclosure - FT Energy Income Partners Strategy ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1320020 - Disclosure - FT Energy Income Partners Strategy ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1320030 - Disclosure - FT Energy Income Partners Strategy ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 1320040 - Disclosure - FT Energy Income Partners Strategy ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1320045 - Disclosure - FT Energy Income Partners Strategy ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 1320050 - Disclosure - FT Energy Income Partners Strategy ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1320060 - Disclosure - FT Energy Income Partners Strategy ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1320070 - Disclosure - FT Energy Income Partners Strategy ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1310000 - Disclosure - FT Energy Income Partners Strategy ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1410001 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1410002 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1410003 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1410004 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 1410005 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 1420010 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1420020 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1420030 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 1420040 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1420045 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 1420050 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1420060 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1420070 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1410000 - Disclosure - FT Vest DJIA Dogs 10 Target Income ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1510001 - Disclosure - First Trust Intermediate Government Opportunities ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1510002 - Disclosure - First Trust Intermediate Government Opportunities ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1510003 - Disclosure - First Trust Intermediate Government Opportunities ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1510004 - Disclosure - First Trust Intermediate Government Opportunities ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 1510005 - Disclosure - First Trust Intermediate Government Opportunities ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 1520010 - Disclosure - First Trust Intermediate Government Opportunities ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1520020 - Disclosure - First Trust Intermediate Government Opportunities ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1520030 - Disclosure - First Trust Intermediate Government Opportunities ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 1520040 - Disclosure - First Trust Intermediate Government Opportunities ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1520045 - Disclosure - First Trust Intermediate Government Opportunities ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 1520050 - Disclosure - First Trust Intermediate Government Opportunities ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1520060 - Disclosure - First Trust Intermediate Government Opportunities ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1520070 - Disclosure - First Trust Intermediate Government Opportunities ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1510000 - Disclosure - First Trust Intermediate Government Opportunities ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1610001 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1610002 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1610003 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1610004 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 1610005 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 1620010 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1620020 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1620030 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 1620040 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1620045 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 1620050 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1620060 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1620070 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1610000 - Disclosure - First Trust Intermediate Duration Investment Grade Corporate ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1710001 - Disclosure - FT Vest SMID Rising Dividend Achievers Target Income ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1710002 - Disclosure - FT Vest SMID Rising Dividend Achievers Target Income ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1710003 - Disclosure - FT Vest SMID Rising Dividend Achievers Target Income ETF 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Disclosure - FT Vest 20+ Year Treasury & Target Income ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 2220060 - Disclosure - FT Vest 20+ Year Treasury & Target Income ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 2220070 - Disclosure - FT Vest 20+ Year Treasury & Target Income ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 2210000 - Disclosure - FT Vest 20+ Year Treasury & Target Income ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink 2310001 - Disclosure - FT Vest Growth Strength & Target Income ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 2310002 - Disclosure - FT Vest Growth Strength & Target Income ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 2310003 - Disclosure - FT Vest Growth Strength & Target Income ETF Investment Strategy 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