110002 - Disclosure - Vanguard Treasury Money Market Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 110003 - Disclosure - Vanguard Treasury Money Market Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 110004 - Disclosure - Vanguard Treasury Money Market Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 110005 - Disclosure - Vanguard Treasury Money Market Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 110006 - Disclosure - Vanguard Treasury Money Market Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 120010 - Disclosure - Vanguard Treasury Money Market Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 120020 - Disclosure - Vanguard Treasury Money Market Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 120030 - Disclosure - Vanguard Treasury Money Market Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 120040 - Disclosure - Vanguard Treasury Money Market Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 120045 - Disclosure - Vanguard Treasury Money Market Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 120050 - Disclosure - Vanguard Treasury Money Market Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 120060 - Disclosure - Vanguard Treasury Money Market Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 120070 - Disclosure - Vanguard Treasury Money Market Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 110000 - Disclosure - Vanguard Treasury Money Market Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 110001 - Disclosure - Vanguard Treasury Money Market Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 210002 - Disclosure - Vanguard SP 500 Value Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 210003 - Disclosure - Vanguard SP 500 Value Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 210004 - Disclosure - Vanguard SP 500 Value Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 210005 - Disclosure - Vanguard SP 500 Value Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 210006 - Disclosure - Vanguard SP 500 Value Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 220010 - Disclosure - Vanguard SP 500 Value Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 220020 - Disclosure - Vanguard SP 500 Value Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 220030 - Disclosure - Vanguard SP 500 Value Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 220040 - Disclosure - Vanguard SP 500 Value Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 220045 - Disclosure - Vanguard SP 500 Value Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 220050 - Disclosure - Vanguard SP 500 Value Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 220060 - Disclosure - Vanguard SP 500 Value Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 220070 - Disclosure - Vanguard SP 500 Value Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 210000 - Disclosure - Vanguard SP 500 Value Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 210001 - Disclosure - Vanguard SP 500 Value Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 310002 - Disclosure - Vanguard SP 500 Growth Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 310003 - Disclosure - Vanguard SP 500 Growth Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 310004 - Disclosure - Vanguard SP 500 Growth Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 310005 - Disclosure - Vanguard SP 500 Growth Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 310006 - Disclosure - Vanguard SP 500 Growth Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 320010 - Disclosure - Vanguard SP 500 Growth Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 320020 - Disclosure - Vanguard SP 500 Growth Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 320030 - Disclosure - Vanguard SP 500 Growth Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 320040 - Disclosure - Vanguard SP 500 Growth Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 320045 - Disclosure - Vanguard SP 500 Growth Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 320050 - Disclosure - Vanguard SP 500 Growth Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 320060 - Disclosure - Vanguard SP 500 Growth Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 320070 - Disclosure - Vanguard SP 500 Growth Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 310000 - Disclosure - Vanguard SP 500 Growth Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 310001 - Disclosure - Vanguard SP 500 Growth Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 410002 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 410003 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 410004 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 410005 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 410006 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 420010 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 420020 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 420030 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 420040 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 420045 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 420050 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 420060 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 420070 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 410000 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 410001 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 510002 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 510003 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 510004 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 510005 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 510006 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 520010 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 520020 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 520030 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 520040 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 520045 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 520050 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 520060 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 520070 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 510000 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 510001 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 610002 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 610003 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 610004 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 610005 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 610006 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 620010 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 620020 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 620030 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 620040 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 620045 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 620050 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 620060 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 620070 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 610000 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 610001 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 710002 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 710003 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 710004 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 710005 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 710006 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 720010 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 720020 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 720030 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 720040 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 720045 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 720050 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 720060 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 720070 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 710000 - Disclosure - Vanguard SP Small-Cap 600 Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 710001 - Disclosure - Vanguard SP Small-Cap 600 Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 810002 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 810003 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 810004 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 810005 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 810006 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 820010 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 820020 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 820030 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 820040 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 820045 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 820050 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 820060 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 820070 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 810000 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 810001 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 910002 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 910003 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 910004 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 910005 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 910006 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 920010 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 920020 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 920030 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 920040 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 920045 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 920050 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 920060 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 920070 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 910000 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 910001 - Disclosure - Vanguard SP Small-Cap 600 Growth Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 1010002 - Disclosure - Vanguard SP 500 Value Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1010003 - Disclosure - Vanguard SP 500 Value Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1010004 - Disclosure - Vanguard SP 500 Value Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1010005 - Disclosure - Vanguard SP 500 Value Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1010006 - Disclosure - Vanguard SP 500 Value Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1020010 - Disclosure - Vanguard SP 500 Value Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1020020 - Disclosure - Vanguard SP 500 Value Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1020030 - Disclosure - Vanguard SP 500 Value Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1020040 - Disclosure - Vanguard SP 500 Value Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1020045 - Disclosure - Vanguard SP 500 Value Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1020050 - Disclosure - Vanguard SP 500 Value Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1020060 - Disclosure - Vanguard SP 500 Value Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1020070 - Disclosure - Vanguard SP 500 Value Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1010000 - Disclosure - Vanguard SP 500 Value Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1010001 - Disclosure - Vanguard SP 500 Value Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 1110002 - Disclosure - Vanguard SP 500 Growth Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1110003 - Disclosure - Vanguard SP 500 Growth Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1110004 - Disclosure - Vanguard SP 500 Growth Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1110005 - Disclosure - Vanguard SP 500 Growth Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1110006 - Disclosure - Vanguard SP 500 Growth Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1120010 - Disclosure - Vanguard SP 500 Growth Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1120020 - Disclosure - Vanguard SP 500 Growth Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1120030 - Disclosure - Vanguard SP 500 Growth Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1120040 - Disclosure - Vanguard SP 500 Growth Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1120045 - Disclosure - Vanguard SP 500 Growth Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1120050 - Disclosure - Vanguard SP 500 Growth Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1120060 - Disclosure - Vanguard SP 500 Growth Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1120070 - Disclosure - Vanguard SP 500 Growth Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1110000 - Disclosure - Vanguard SP 500 Growth Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1110001 - Disclosure - Vanguard SP 500 Growth Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 1210002 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1210003 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1210004 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1210005 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1210006 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1220010 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1220020 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1220030 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1220040 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1220045 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1220050 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1220060 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1220070 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1210000 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1210001 - Disclosure - Vanguard SP Mid-Cap 400 Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 1310002 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1310003 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1310004 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1310005 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1310006 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1320010 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1320020 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1320030 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1320040 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1320045 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1320050 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1320060 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1320070 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1310000 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1310001 - Disclosure - Vanguard SP Mid-Cap 400 Value Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 1410002 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1410003 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1410004 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1410005 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1410006 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1420010 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1420020 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1420030 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1420040 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1420045 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1420050 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1420060 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1420070 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1410000 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1410001 - Disclosure - Vanguard SP Mid-Cap 400 Growth Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 1510002 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1510003 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1510004 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1510005 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1510006 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1520010 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1520020 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1520030 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1520040 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1520045 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1520050 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1520060 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1520070 - Disclosure - Vanguard SP Small-Cap 600 Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1510000 - Disclosure - Vanguard SP Small-Cap 600 Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1510001 - Disclosure - Vanguard SP Small-Cap 600 Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink 1610002 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Investment Objectives and Goals link:presentationLink link:definitionLink link:calculationLink 1610003 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Fees and Expenses link:presentationLink link:definitionLink link:calculationLink 1610004 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Investment Strategy link:presentationLink link:definitionLink link:calculationLink 1610005 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Investment Risks link:presentationLink link:definitionLink link:calculationLink 1610006 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Performance Management link:presentationLink link:definitionLink link:calculationLink 1620010 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Shareholder Fees link:presentationLink link:definitionLink link:calculationLink 1620020 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Annual Fund Operating Expenses link:presentationLink link:definitionLink link:calculationLink 1620030 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Expense Example link:presentationLink link:definitionLink link:calculationLink 1620040 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Expense Example, No Redemption link:presentationLink link:definitionLink link:calculationLink 1620045 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Risks Data link:presentationLink link:definitionLink link:calculationLink 1620050 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1620060 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Average Annual Total Returns link:presentationLink link:definitionLink link:calculationLink 1620070 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund Market Index Performance link:presentationLink link:definitionLink link:calculationLink 1610000 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund N-1A Cover link:presentationLink link:definitionLink link:calculationLink 1610001 - Disclosure - Vanguard SP Small-Cap 600 Value Index Fund N-1A Supplement link:presentationLink link:definitionLink link:calculationLink Vanguard Treasury Money Market Fund S000002233 [Member] Retail Prospectus [Member] Investor Shares C000005732 [Member] FTSE 3-Month U.S. Treasury Bill Index (reflects no deduction for fees or expenses)[Member] iMoneyNet Money Fund Report's 100 percent Treasury Funds Average[Member] General Market Risk [Member] Investing in Bond Markets Risk [Member] Stable NAV Risk [Member] Money Market Funds and Interest Rates [Member] Credit Risk [Member] Bond Liquidity Risk [Member] Repurchase Agreements Risk [Member] Variable and Floating Rate Securities [Member] Active Management Risk [Member] Vanguard SP 500 Value Index Fund S000030013 [Member] ETF Prospectus [Member] ETF Shares C000092036 [Member] Based on NAV[Member] Based on Market Price[Member] S&P 500 Value Index (reflects no deduction for fees, expenses, or taxes)[Member] Dow Jones U.S. Total Stock Market Float Adjusted Index (reflects no deduction for fees, expenses, or taxes)[Member] Investing in Equity Markets Risk [Member] Market Capitalization Risk [Member] Value Investing Risk [Member] Index Investing Risk [Member] Nondiversification Risk [Member] Concentration Risk [Member] ETF Share Trading Risk [Member] Authorized Participants Risk [Member] Vanguard SP 500 Growth Index Fund S000030012 [Member] C000092034 [Member] S&P 500 Growth Index (reflects no deduction for fees, expenses, or taxes)[Member] Growth Investing Risk [Member] Sector Risk [Member] Vanguard SP Mid-Cap 400 Index Fund S000030014 [Member] C000092038 [Member] S&P MidCap 400 Index (reflects no deduction for fees, expenses, or taxes)[Member] Vanguard SP Mid-Cap 400 Value Index Fund S000030015 [Member] C000092040 [Member] S&P MidCap 400 Value Index (reflects no deduction for fees, expenses, or taxes)[Member] Vanguard SP Mid-Cap 400 Growth Index Fund S000030016 [Member] C000092043 [Member] S&P MidCap 400 Growth Index (reflects no deduction for fees, expenses, or taxes)[Member] Vanguard SP Small-Cap 600 Index Fund S000030017 [Member] C000092044 [Member] S&P SmallCap 600 Index (reflects no deduction for fees, expenses, or taxes)[Member] Vanguard SP Small-Cap 600 Value Index Fund S000030019 [Member] C000092048 [Member] S&P SmallCap 600 Value Index (reflects no deduction for fees, expenses, or taxes)[Member] Vanguard SP Small-Cap 600 Growth Index Fund S000030018 [Member] C000092046 [Member] S&P SmallCap 600 Growth Index (reflects no deduction for fees, expenses, or taxes)[Member] Institutional Prospectus [Member] Institutional Shares C000092037 [Member] C000092035 [Member] C000092039 [Member] C000092041 [Member] C000092042 [Member] C000092045 [Member] C000092049 [Member]