110001 - Disclosure - Vanguard Total Bond Market Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 110002 - Disclosure - Vanguard Total Bond Market Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 110003 - Disclosure - Vanguard Total Bond Market Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 110004 - Disclosure - Vanguard Total Bond Market Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 110005 - Disclosure - Vanguard Total Bond Market Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 120010 - Disclosure - Vanguard Total Bond Market Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 120020 - Disclosure - Vanguard Total Bond Market Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 120030 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 120040 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 120045 - Disclosure - Vanguard Total Bond Market Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 120050 - Disclosure - Vanguard Total Bond Market Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 120060 - Disclosure - Vanguard Total Bond Market Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 120070 - Disclosure - Vanguard Total Bond Market Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 110000 - Disclosure - Vanguard Total Bond Market Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 210001 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 210002 - Disclosure - Vanguard Short-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 210003 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 210004 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 210005 - Disclosure - Vanguard Short-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 220010 - Disclosure - Vanguard Short-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 220020 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 220030 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 220040 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 220045 - Disclosure - Vanguard Short-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 220050 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 220060 - Disclosure - Vanguard Short-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 220070 - Disclosure - Vanguard Short-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 210000 - Disclosure - Vanguard Short-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 310001 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 310002 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 310003 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 310004 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 310005 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 320010 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 320020 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 320030 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 320040 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 320045 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 320050 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 320060 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 320070 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 310000 - Disclosure - Vanguard Intermediate-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 410001 - Disclosure - Vanguard Total Bond Market Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 410002 - Disclosure - Vanguard Total Bond Market Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 410003 - Disclosure - Vanguard Total Bond Market Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 410004 - Disclosure - Vanguard Total Bond Market Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 410005 - Disclosure - Vanguard Total Bond Market Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 420010 - Disclosure - Vanguard Total Bond Market Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 420020 - Disclosure - Vanguard Total Bond Market Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 420030 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 420040 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 420045 - Disclosure - Vanguard Total Bond Market Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 420050 - Disclosure - Vanguard Total Bond Market Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 420060 - Disclosure - Vanguard Total Bond Market Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 420070 - Disclosure - Vanguard Total Bond Market Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 410000 - Disclosure - Vanguard Total Bond Market Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 510001 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 510002 - Disclosure - Vanguard Short-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 510003 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 510004 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 510005 - Disclosure - Vanguard Short-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 520010 - Disclosure - Vanguard Short-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 520020 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 520030 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 520040 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 520045 - Disclosure - Vanguard Short-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 520050 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 520060 - Disclosure - Vanguard Short-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 520070 - Disclosure - Vanguard Short-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 510000 - Disclosure - Vanguard Short-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 610001 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 610002 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 610003 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 610004 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 610005 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 620010 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 620020 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 620030 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 620040 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 620045 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 620050 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 620060 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 620070 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 610000 - Disclosure - Vanguard Intermediate-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 710001 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 710002 - Disclosure - Vanguard Long-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 710003 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 710004 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 710005 - Disclosure - Vanguard Long-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 720010 - Disclosure - Vanguard Long-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 720020 - Disclosure - Vanguard Long-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 720030 - Disclosure - Vanguard Long-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 720040 - Disclosure - Vanguard Long-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 720045 - Disclosure - Vanguard Long-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 720050 - Disclosure - Vanguard Long-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 720060 - Disclosure - Vanguard Long-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 720070 - Disclosure - Vanguard Long-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 710000 - Disclosure - Vanguard Long-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 810001 - Disclosure - Vanguard Total Bond Market Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 810002 - Disclosure - Vanguard Total Bond Market Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 810003 - Disclosure - Vanguard Total Bond Market Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 810004 - Disclosure - Vanguard Total Bond Market Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 810005 - Disclosure - Vanguard Total Bond Market Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 820010 - Disclosure - Vanguard Total Bond Market Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 820020 - Disclosure - Vanguard Total Bond Market Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 820030 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 820040 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 820045 - Disclosure - Vanguard Total Bond Market Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 820050 - Disclosure - Vanguard Total Bond Market Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 820060 - Disclosure - Vanguard Total Bond Market Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 820070 - Disclosure - Vanguard Total Bond Market Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 810000 - Disclosure - Vanguard Total Bond Market Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 910001 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 910002 - Disclosure - Vanguard Short-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 910003 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 910004 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 910005 - Disclosure - Vanguard Short-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 920010 - Disclosure - Vanguard Short-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 920020 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 920030 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 920040 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 920045 - Disclosure - Vanguard Short-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 920050 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 920060 - Disclosure - Vanguard Short-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 920070 - Disclosure - Vanguard Short-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 910000 - Disclosure - Vanguard Short-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1010001 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1010002 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1010003 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1010004 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1010005 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1020010 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1020020 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1020030 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1020040 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1020045 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1020050 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1020060 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1020070 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1010000 - Disclosure - Vanguard Intermediate-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1110001 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1110002 - Disclosure - Vanguard Long-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1110003 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1110004 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1110005 - Disclosure - Vanguard Long-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1120010 - Disclosure - Vanguard Long-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1120020 - Disclosure - Vanguard Long-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1120030 - Disclosure - Vanguard Long-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1120040 - Disclosure - Vanguard Long-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1120045 - Disclosure - Vanguard Long-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1120050 - Disclosure - Vanguard Long-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1120060 - Disclosure - Vanguard Long-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1120070 - Disclosure - Vanguard Long-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1110000 - Disclosure - Vanguard Long-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1210001 - Disclosure - Vanguard Total Bond Market Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1210002 - Disclosure - Vanguard Total Bond Market Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1210003 - Disclosure - Vanguard Total Bond Market Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1210004 - Disclosure - Vanguard Total Bond Market Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1210005 - Disclosure - Vanguard Total Bond Market Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1220010 - Disclosure - Vanguard Total Bond Market Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1220020 - Disclosure - Vanguard Total Bond Market Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1220030 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1220040 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1220045 - Disclosure - Vanguard Total Bond Market Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1220050 - Disclosure - Vanguard Total Bond Market Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1220060 - Disclosure - Vanguard Total Bond Market Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1220070 - Disclosure - Vanguard Total Bond Market Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1210000 - Disclosure - Vanguard Total Bond Market Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1310001 - Disclosure - Vanguard Total Bond Market Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1310002 - Disclosure - Vanguard Total Bond Market Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1310003 - Disclosure - Vanguard Total Bond Market Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1310004 - Disclosure - Vanguard Total Bond Market Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1310005 - Disclosure - Vanguard Total Bond Market Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1320010 - Disclosure - Vanguard Total Bond Market Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1320020 - Disclosure - Vanguard Total Bond Market Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1320030 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1320040 - Disclosure - Vanguard Total Bond Market Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1320045 - Disclosure - Vanguard Total Bond Market Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1320050 - Disclosure - Vanguard Total Bond Market Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1320060 - Disclosure - Vanguard Total Bond Market Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1320070 - Disclosure - Vanguard Total Bond Market Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1310000 - Disclosure - Vanguard Total Bond Market Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1410001 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1410002 - Disclosure - Vanguard Short-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1410003 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1410004 - Disclosure - Vanguard Short-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1410005 - Disclosure - Vanguard Short-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1420010 - Disclosure - Vanguard Short-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1420020 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1420030 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1420040 - Disclosure - Vanguard Short-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1420045 - Disclosure - Vanguard Short-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1420050 - Disclosure - Vanguard Short-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1420060 - Disclosure - Vanguard Short-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1420070 - Disclosure - Vanguard Short-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1410000 - Disclosure - Vanguard Short-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1510001 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1510002 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1510003 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1510004 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1510005 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1520010 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1520020 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1520030 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1520040 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1520045 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1520050 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1520060 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1520070 - Disclosure - Vanguard Intermediate-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1510000 - Disclosure - Vanguard Intermediate-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1610001 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1610002 - Disclosure - Vanguard Long-Term Bond Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1610003 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1610004 - Disclosure - Vanguard Long-Term Bond Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1610005 - Disclosure - Vanguard Long-Term Bond Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1620010 - Disclosure - Vanguard Long-Term Bond Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1620020 - Disclosure - Vanguard Long-Term Bond Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1620030 - Disclosure - Vanguard Long-Term Bond Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1620040 - Disclosure - Vanguard Long-Term Bond Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1620045 - Disclosure - Vanguard Long-Term Bond Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1620050 - Disclosure - Vanguard Long-Term Bond Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1620060 - Disclosure - Vanguard Long-Term Bond Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1620070 - Disclosure - Vanguard Long-Term Bond Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1610000 - Disclosure - Vanguard Long-Term Bond Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1710001 - Disclosure - Vanguard Total Bond Market II Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1710002 - Disclosure - Vanguard Total Bond Market II Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1710003 - Disclosure - Vanguard Total Bond Market II Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1710004 - Disclosure - Vanguard Total Bond Market II Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1710005 - Disclosure - Vanguard Total Bond Market II Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1720010 - Disclosure - Vanguard Total Bond Market II Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1720020 - Disclosure - Vanguard Total Bond Market II Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1720030 - Disclosure - Vanguard Total Bond Market II Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1720040 - Disclosure - Vanguard Total Bond Market II Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1720045 - Disclosure - Vanguard Total Bond Market II Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1720050 - Disclosure - Vanguard Total Bond Market II Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1720060 - Disclosure - Vanguard Total Bond Market II Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1720070 - Disclosure - Vanguard Total Bond Market II Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1710000 - Disclosure - Vanguard Total Bond Market II Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1810001 - Disclosure - Vanguard Total Bond Market II Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1810002 - Disclosure - Vanguard Total Bond Market II Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1810003 - Disclosure - Vanguard Total Bond Market II Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1810004 - Disclosure - Vanguard Total Bond Market II Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1810005 - Disclosure - Vanguard Total Bond Market II Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1820010 - Disclosure - Vanguard Total Bond Market II Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1820020 - Disclosure - Vanguard Total Bond Market II Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1820030 - Disclosure - Vanguard Total Bond Market II Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1820040 - Disclosure - Vanguard Total Bond Market II Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1820045 - Disclosure - Vanguard Total Bond Market II Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1820050 - Disclosure - Vanguard Total Bond Market II Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1820060 - Disclosure - Vanguard Total Bond Market II Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1820070 - Disclosure - Vanguard Total Bond Market II Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1810000 - Disclosure - Vanguard Total Bond Market II Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1910001 - Disclosure - Vanguard Inflation-Protected Securities Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1910002 - Disclosure - Vanguard Inflation-Protected Securities Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1910003 - Disclosure - Vanguard Inflation-Protected Securities Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1910004 - Disclosure - Vanguard Inflation-Protected Securities Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1910005 - Disclosure - Vanguard Inflation-Protected Securities Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1920010 - Disclosure - Vanguard Inflation-Protected Securities Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1920020 - Disclosure - Vanguard Inflation-Protected Securities Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1920030 - Disclosure - Vanguard Inflation-Protected Securities Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1920040 - Disclosure - Vanguard Inflation-Protected Securities Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1920045 - Disclosure - Vanguard Inflation-Protected Securities Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1920050 - Disclosure - Vanguard Inflation-Protected Securities Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1920060 - Disclosure - Vanguard Inflation-Protected Securities Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1920070 - Disclosure - Vanguard Inflation-Protected Securities Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1910000 - Disclosure - Vanguard Inflation-Protected Securities Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 2010001 - Disclosure - Vanguard Inflation-Protected Securities Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 2010002 - Disclosure - Vanguard Inflation-Protected Securities Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 2010003 - Disclosure - Vanguard Inflation-Protected Securities Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 2010004 - Disclosure - Vanguard Inflation-Protected Securities Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 2010005 - Disclosure - Vanguard Inflation-Protected Securities Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 2020010 - Disclosure - Vanguard Inflation-Protected Securities Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 2020020 - Disclosure - Vanguard Inflation-Protected Securities Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 2020030 - Disclosure - Vanguard Inflation-Protected Securities Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 2020040 - Disclosure - Vanguard Inflation-Protected Securities Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 2020045 - Disclosure - Vanguard Inflation-Protected Securities Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 2020050 - Disclosure - Vanguard Inflation-Protected Securities Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 2020060 - Disclosure - Vanguard Inflation-Protected Securities Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 2020070 - Disclosure - Vanguard Inflation-Protected Securities Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 2010000 - Disclosure - Vanguard Inflation-Protected Securities Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 2110001 - Disclosure - Vanguard Ultra-Short Bond ETF Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 2110002 - Disclosure - Vanguard Ultra-Short Bond ETF Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 2110003 - Disclosure - Vanguard Ultra-Short Bond ETF Investment Strategy link:presentationLink link:definitionLink link:calculationLink 2110004 - Disclosure - Vanguard Ultra-Short Bond ETF Investment Risks link:presentationLink link:definitionLink link:calculationLink 2110005 - Disclosure - Vanguard Ultra-Short Bond ETF Performance Management link:presentationLink link:definitionLink link:calculationLink 2120010 - Disclosure - Vanguard Ultra-Short Bond ETF Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 2120020 - Disclosure - Vanguard Ultra-Short Bond ETF Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 2120030 - Disclosure - Vanguard Ultra-Short Bond ETF Expense Example link:presentationLink link:definitionLink link:calculationLink 2120040 - Disclosure - Vanguard Ultra-Short Bond ETF Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 2120045 - Disclosure - Vanguard Ultra-Short Bond ETF Risks Data link:presentationLink link:definitionLink link:calculationLink 2120050 - Disclosure - Vanguard Ultra-Short Bond ETF Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 2120060 - Disclosure - Vanguard Ultra-Short Bond ETF Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 2120070 - Disclosure - Vanguard Ultra-Short Bond ETF Market Index Performance link:presentationLink link:definitionLink link:calculationLink 2110000 - Disclosure - Vanguard Ultra-Short Bond ETF N-1A Cover link:presentationLink link:definitionLink link:calculationLink Vanguard Total Bond Market Index Fund S000002564 [Member] Investor Prospectus [Member] Investor Shares C000007062 [Member] After Taxes on Distributions[Member] After Taxes on Distributions And Sales[Member] Bloomberg U.S. Aggregate Float Adjusted Index (reflects no deduction for fees, expenses, or taxes)[Member] General Market Risk [Member] Investing in Bond Markets Risk [Member] Interest Rate Risk [Member] Income Risk [Member] Credit Risk [Member] Bond Liquidity Risk [Member] Call Risk [Member] Prepayment Risk [Member] Extension Risk [Member] Index Investing Risk [Member] Vanguard Short-Term Bond Index Fund S000002563 [Member] C000007060 [Member] Bloomberg U.S. 1-5 Year Gov/Credit Float Adjusted Index (reflects no deduction for fees, expenses, or taxes)[Member] Vanguard Intermediate-Term Bond Index Fund S000002561 [Member] C000007057 [Member] Bloomberg U.S. 5-10 Year Gov/Credit Float Adjusted Index (reflects no deduction for fees, expenses, or taxes)[Member] Admiral Prospectus [Member] Admiral Shares C000007063 [Member] C000007061 [Member] C000007058 [Member] Vanguard Long-Term Bond Index Fund S000002562 [Member] C000209800 [Member] Bloomberg U.S. Long Gov/Credit Float Adjusted Index (reflects no deduction for fees, expenses, or taxes)[Member] Institutional Prospectus [Member] Institutional Shares C000007064 [Member] Institutional Plus Shares C000081425 [Member] C000105310 [Member] C000105311 [Member] C000024520 [Member] C000105308 [Member] C000024522 [Member] C000105309 [Member] Institutional Select Prospectus [Member] Institutional Select Shares C000170279 [Member] ETF Prospectus [Member] ETF Shares C000046844 [Member] Based on NAV[Member] Based on Market Price[Member] ETF Share Trading Risk [Member] Authorized Participants Risk [Member] C000046843 [Member] C000046841 [Member] C000046842 [Member] Vanguard Total Bond Market II Index Fund S000025158 [Member] C000075027 [Member] C000075028 [Member] Vanguard Inflation-Protected Securities Fund S000019554 [Member] Retail Prospectus [Member] C000054349 [Member] C000054350 [Member] Bloomberg U.S. Treasury Inflation Protected Securities Index (reflects no deduction for fees, expenses, or taxes)[Member] Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)[Member] Inflation Indexed Securities Risk [Member] Active Management Risk [Member] Derivatives Risk [Member] C000054351 [Member] Vanguard Ultra-Short Bond ETF S000071399 [Member] C000226472 [Member] Based on NAV Return After Taxes on Distributions[Member] Based on NAV Return After Taxes on Distributions and Sale of Fund Shares[Member] Bloomberg U.S. Treasury Bellwethers: 1 Year Index (reflects no deduction for fees, expenses, or taxes)[Member] Management of certain similar funds risk [Member]