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Expense Example, No Redemption (Vanguard Small-Cap Value Index Fund Retail)
Vanguard Small-Cap Value Index Fund
Vanguard Small-Cap Value Index Fund - Investor Shares
1/1/2014 - 12/31/2014
USD ($)
Vanguard Small-Cap Value Index Fund
Vanguard Small-Cap Value Index Fund - Admiral Shares
1/1/2014 - 12/31/2014
USD ($)
Expense Example, No Redemption:    
1 YEAR 24rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007802Member
9rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000105305Member
3 YEAR 74rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007802Member
29rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000105305Member
5 YEAR 130rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007802Member
51rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000105305Member
10 YEAR 293rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007802Member
115rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= vanguard_S000002847Member
/ rr_ProspectusShareClassAxis
= vanguard_C000105305Member