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Expense Example, No Redemption (Vanguard Explorer Fund Retail)
Vanguard Explorer Fund
Vanguard Explorer Fund - Investor Shares
11/1/2013 - 10/31/2014
USD ($)
Vanguard Explorer Fund
Vanguard Explorer Fund - Admiral Shares
11/1/2013 - 10/31/2014
USD ($)
Expense Example, No Redemption:    
1 YEAR 54rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007081Member
37rr_ExpenseExampleNoRedemptionYear01
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007082Member
3 YEAR 170rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007081Member
116rr_ExpenseExampleNoRedemptionYear03
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007082Member
5 YEAR 296rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007081Member
202rr_ExpenseExampleNoRedemptionYear05
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007082Member
10 YEAR 665rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007081Member
456rr_ExpenseExampleNoRedemptionYear10
/ dei_LegalEntityAxis
= vanguard_S000002578Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007082Member