2.2.0.25truefalse010000 - Document - Risk/Return Summary {Unlabeled}falsefalsetrue1falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Retail {dei_LegalEntityAxis} : Vanguard High Dividend Yield Index Fund 11/1/2009 - 10/31/2010 v_Retail_S000014011http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_RetailMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000014011Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli01false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Retail | Vanguard High Dividend Yield Index FundRetail | Vanguard High Dividend Yield Index Fundfalsefalsefalsefalsefalse1falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Retail {dei_LegalEntityAxis} : Vanguard High Dividend Yield Index Fund 11/1/2009 - 10/31/2010 v_Retail_S000014011http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_RetailMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000014011Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseRetail | Vanguard High Dividend Yield Index Fund3false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return4false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:5false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to track the performance of a benchmark index that measures the investment return of common stocks of companies that are characterized by high dividend yield.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective6false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading7false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund8false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption9false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsehttp://vanguard/role/S000014011ShareholderFeesRetailfalsefalse1607155 - Schedule - Shareholder Fees (Vanguard High Dividend Yield Index Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee5falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member8false0rr_MaximumAccountFeerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue2020falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryInclude the caption "Maximum Account Fees" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., "Maximum Account Maintenance Fee" or "Maximum Cash Management Fee"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph c -Subsection instructions falsefalseAccount Service Fee (for fund account balances below $10,000)falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_MaximumAccountFeetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue2020falsefalsefalsetruefalseOthernanafalsefalseAccount Service Fee (for fund account balances below $10,000)15Shareholder Fees (Vanguard High Dividend Yield Index Fund Retail) Vanguard High Dividend Yield Index Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]10false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption11false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsehttp://vanguard/role/S000014011OperatingExpensesRetailfalsefalse1607142 - Schedule - Annual Fund Operating Expenses (Vanguard High Dividend Yield Index Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00050.0005falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00050.0005falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00300.0030falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00300.0030falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard High Dividend Yield Index Fund Retail) Vanguard High Dividend Yield Index FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]12false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE13false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund's Investor Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Shares provide a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]14false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> truehttp://vanguard/role/S000014011ExpenseExampleNoRedemptionRetailfalsefalse1607147 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard High Dividend Yield Index Fund Retail)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue3131falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue9797falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue169169falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue381381falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue3131falsefalsefalsetruefalse2truefalsetrue9797falsefalsefalsetruefalse3truefalsetrue169169falsefalsefalsetruefalse4truefalsetrue381381falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - Investor Shares41Expense Example, No Redemption (Vanguard High Dividend Yield Index Fund Retail) Vanguard High Dividend Yield Index Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption15false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading16false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 34%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover17false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:18false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund employs a 'passive management' -or indexing-investment approach designed to track the performance of the FTSE(r) High Dividend Yield Index, which consists of common stocks of companies that pay dividends that generally are higher than average. The Fund attempts to replicate the target index by investing all, or substantially all, of its assets in the stocks that make up the Index, holding each stock in approximately the same proportion as its weighting in the Index. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative19false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:20false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. The Fund's target index may, at times, become focused in stocks of a particular sector, category, or group of companies. Because the Fund seeks to track its target index, the Fund may underperform the overall stock market.</p><p>Investment style risk, which is the chance that returns from high dividend-paying stocks will trail returns from the overall stock market. Specific types of stocks tend to go through cycles of doing better-or worse-than the stock market in general. These periods have, in the past, lasted for as long as several years.</p><p>Asset concentration risk, which is the chance that the Fund's performance may be hurt disproportionately by the poor performance of relatively few stocks. The Fund tends to invest a high percentage of assets in its ten largest holdings.</p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative21false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table22false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund's Investor Shares has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns of the Investor Shares compare with those of the Fund's target index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative23false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard High Dividend Yield Index Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart24false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000038294Member ~ </div> falsefalseBarChart1.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000038294Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000038294MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesVanguard High Dividend Yield Index FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-11-162006-11-16falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01540.0154falsefalsefalsetruefalseOthernanafalsefalse20073falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3251-0.3251falsefalsefalsetruefalseOthernanafalsefalse20084falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.17520.1752falsefalsefalsetruefalseOthernanafalsefalse20095falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14020.1402falsefalsefalsetruefalseOthernanafalsefalse201015Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000038294MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:25false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 17.43% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -19.44% (quarter ended December 31, 2008 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing26false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:27false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000014011PerformanceTableDataRetailfalsefalse1607135 - Schedule - Average Annual Total Returns (Vanguard High Dividend Yield Index Fund Retail)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.13570.1357falsefalsefalsetruefalse2truetruetrue0.09650.0965falsefalsefalsetruefalse3truetruetrue0.14360.1436falsefalsefalsetruefalse4truetruetrue0.14020.1402falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*6false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0182-0.0182falsefalsefalsetruefalse2truetruetrue-0.0121-0.0121falsefalsefalsetruefalse3truetruetrue-0.0114-0.0114falsefalsefalsetruefalse4truetruetrue-0.0139-0.0139falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inceptionduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - 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Investor SharesReturn After Taxes on Distributions0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.13570.1357falsefalsefalsetruefalse2truetruetrue-0.0182-0.0182falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - Investor Shares Return After Taxes on Distributions3falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn After Taxes on Distributions and Sale of Fund Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - Investor SharesReturn After Taxes on Distributions and Sale of Fund Shares0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.09650.0965falsefalsefalsetruefalse2truetruetrue-0.0121-0.0121falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - Investor Shares Return After Taxes on Distributions and Sale of Fund Shares4falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseFTSE High Dividend Yield Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_FTSEHighDividendYieldIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - Investor SharesFTSE High Dividend Yield Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14360.1436falsefalsefalsetruefalse2truetruetrue-0.0114-0.0114falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - Investor Shares FTSE High Dividend Yield Index24Average Annual Total Returns (Vanguard High Dividend Yield Index Fund Retail) Vanguard High Dividend Yield Index FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance28false0rr_PerformanceTableClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Closing29false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Participant | Vanguard High Dividend Yield Index FundParticipant | Vanguard High Dividend Yield Index Fundfalsefalsefalsefalsefalse2falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Participant {dei_LegalEntityAxis} : Vanguard High Dividend Yield Index Fund 11/1/2009 - 10/31/2010 v_Participant_S000014011http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_ParticipantMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000014011Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseParticipant | Vanguard High Dividend Yield Index Fund31false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return32false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:33false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to track the performance of a benchmark index that measures the investment return of common stocks of companies that are characterized by high dividend yield.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective34false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading35false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund36false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption37false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsehttp://vanguard/role/S000014011ShareholderFeesParticipantfalsefalse1607185 - Schedule - Shareholder Fees (Vanguard High Dividend Yield Index Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee14Shareholder Fees (Vanguard High Dividend Yield Index Fund Participant) Vanguard High Dividend Yield Index FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]38false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption39false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsehttp://vanguard/role/S000014011OperatingExpensesParticipantfalsefalse1607178 - Schedule - Annual Fund Operating Expenses (Vanguard High Dividend Yield Index Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00250.0025falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00050.0005falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00050.0005falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00300.0030falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00300.0030falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard High Dividend Yield Index Fund Participant) Vanguard High Dividend Yield Index FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]40false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE41false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund's Investor Shares with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Shares provide a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]42false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> truehttp://vanguard/role/S000014011ExpenseExampleNoRedemptionParticipantfalsefalse1607181 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard High Dividend Yield Index Fund Participant)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue3131falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue9797falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue169169falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue381381falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue3131falsefalsefalsetruefalse2truefalsetrue9797falsefalsefalsetruefalse3truefalsetrue169169falsefalsefalsetruefalse4truefalsetrue381381falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - Investor Shares41Expense Example, No Redemption (Vanguard High Dividend Yield Index Fund Participant) Vanguard High Dividend Yield Index Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption43false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading44false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 34%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover45false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:46false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund employs a 'passive management' -or indexing-investment approach designed to track the performance of the FTSE(r) High Dividend Yield Index, which consists of common stocks of companies that pay dividends that generally are higher than average. The Fund attempts to replicate the target index by investing all, or substantially all, of its assets in the stocks that make up the Index, holding each stock in approximately the same proportion as its weighting in the Index. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative47false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:48false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. The Fund's target index may, at times, become focused in stocks of a particular sector, category, or group of companies. Because the Fund seeks to track its target index, the Fund may underperform the overall stock market.</p><p>Investment style risk, which is the chance that returns from high-dividend-paying stocks will trail returns from the overall stock market. Specific types of stocks tend to go through cycles of doing better-or worse-than the stock market in general. These periods have, in the past, lasted for as long as several years.</p><p>Asset concentration risk, which is the chance that the Fund's performance may be hurt disproportionately by the poor performance of relatively few stocks. The Fund tends to invest a high percentage of assets in its ten largest holdings.</p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative49false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table50false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund's Investor Shares has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of the Fund's target index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative51false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard High Dividend Yield Index Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart52false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000038294Member ~ </div> falsefalseBarChart2.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000038294Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000038294MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund - Investor SharesVanguard High Dividend Yield Index FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-11-162006-11-16falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01540.0154falsefalsefalsetruefalseOthernanafalsefalse20073falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3251-0.3251falsefalsefalsetruefalseOthernanafalsefalse20084falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.17520.1752falsefalsefalsetruefalseOthernanafalsefalse20095falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14020.1402falsefalsefalsetruefalseOthernanafalsefalse201015Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000038294MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:53false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 17.43% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -19.44% (quarter ended December 31, 2008 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing54false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:55false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000014011PerformanceTableDataParticipantfalsefalse1607176 - Schedule - Average Annual Total Returns (Vanguard High Dividend Yield Index Fund Participant)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14360.1436falsefalsefalsetruefalse2truetruetrue0.14020.1402falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*6false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0114-0.0114falsefalsefalsetruefalse2truetruetrue-0.0139-0.0139falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inceptionduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMembertruefalseReturn Before Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - Investor SharesReturn Before Taxes0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14020.1402falsefalsefalsetruefalse2truetruetrue-0.0139-0.0139falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - Investor Shares2falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038294Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseFTSE High Dividend Yield Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_FTSEHighDividendYieldIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - Investor SharesFTSE High Dividend Yield Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14360.1436falsefalsefalsetruefalse2truetruetrue-0.0114-0.0114falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - Investor Shares FTSE High Dividend Yield Index22Average Annual Total Returns (Vanguard High Dividend Yield Index Fund Participant) Vanguard High Dividend Yield Index FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance56false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00ETF | Vanguard High Dividend Yield Index FundETF | Vanguard High Dividend Yield Index Fundfalsefalsefalsefalsefalse3falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : ETF {dei_LegalEntityAxis} : Vanguard High Dividend Yield Index Fund 11/1/2009 - 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Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:60false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to track the performance of a benchmark index that measures the investment return of common stocks of companies that are characterized by high dividend yield.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective61false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading62false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold ETF Shares of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund63false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption64false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011ShareholderFeesETF column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011ShareholderFeesETF column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsehttp://vanguard/role/S000014011ShareholderFeesETFfalsefalse1607200 - 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Schedule - Annual Fund Operating Expenses (Vanguard High Dividend Yield Index Fund ETF)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - ETF SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00130.0013falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00130.0013falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00050.0005falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00050.0005falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00180.0018falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00180.0018falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard High Dividend Yield Index Fund ETF) Vanguard High Dividend Yield Index FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]67false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE68false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p></p><p>The following example is intended to help you compare the cost of investing in High Dividend Yield ETF with the cost of investing in other funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in High Dividend Yield ETF. This example assumes that High Dividend Yield ETF Shares provide a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be: </p><p>This example does not include the brokerage commissions that you may pay to buy and sell ETF Shares of the Fund. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]69false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011ExpenseExampleNoRedemptionETF column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011ExpenseExampleNoRedemptionETF column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member ~ </div> truehttp://vanguard/role/S000014011ExpenseExampleNoRedemptionETFfalsefalse1607207 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard High Dividend Yield Index Fund ETF)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue1818falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue5858falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue101101falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue230230falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMemberVanguard High Dividend Yield Index Fund - ETF SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue1818falsefalsefalsetruefalse2truefalsetrue5858falsefalsefalsetruefalse3truefalsetrue101101falsefalsefalsetruefalse4truefalsetrue230230falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - ETF Shares41Expense Example, No Redemption (Vanguard High Dividend Yield Index Fund ETF) Vanguard High Dividend Yield Index Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000014011MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption70false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading71false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 34%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover72false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:73false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund employs a 'passive management' -or indexing-investment approach designed to track the performance of the FTSE(r) High Dividend Yield Index, which consists of common stocks of companies that pay dividends that generally are higher than average. The Fund attempts to replicate the target index by investing all, or substantially all, of its assets in the stocks that make up the Index, holding each stock in approximately the same proportion as its weighting in the Index. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative74false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:75false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. The Fund's target index may, at times, become focused in stocks of a particular sector, category, or group of companies. Because the Fund seeks to track its target index, the Fund may underperform the overall stock market.</p><p>Investment style risk, which is the chance that returns from high-dividend paying stocks will trail returns from the overall stock market. Specific types of stocks tend to go through cycles of doing better-or worse-than the stock market in general. These periods have, in the past, lasted for as long as several years.</p><p>Asset concentration risk, which is the chance that the Fund's performance may be hurt disproportionately by the poor performance of relatively few stocks. The Fund tends to invest a high percentage of assets in its ten largest holdings.</p><p>Because ETF Shares are traded on an exchange, they are subject to additional risks:</p><p>High Dividend Yield ETF Shares are listed for trading on NYSE Arca and can be bought and sold on the secondary market at market prices. Although it is expected that the market price of the High Dividend Yield ETF Share typically will approximate its net asset value (NAV), there may be times when the market price and the NAV vary significantly. Thus, you may pay more or less than NAV when you buy High Dividend Yield ETF Shares on the secondary market, and you may receive more or less than NAV when you sell those shares.</p><p>Although High Dividend Yield ETF Shares are listed for trading on NYSE Arca, it is possible that an active trading market may not be maintained.</p><p>Trading of High Dividend Yield ETF Shares on NYSE Arca may be halted by the activation of individual or marketwide 'circuit breakers' (which halt trading for a specific period of time when the price of a particular security or overall market prices decline by a specified percentage). Trading of High Dividend Yield ETF Shares may also be halted if (1) the shares are delisted from NYSE Arca without first being listed on another exchange or (2) NYSE Arca officials determine that such action is appropriate in the interest of a fair and orderly market or to protect investors.</p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative76false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table77false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund's ETF Shares (based on NAV) has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns of the ETF Shares compare with those of the Fund's target index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative78false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard High Dividend Yield Index Fund ETF SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart79false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000038295Member ~ </div> falsefalseBarChart3.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000038295Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000038295MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberVanguard High Dividend Yield Index Fund - ETF SharesVanguard High Dividend Yield Index FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse002006-11-102006-11-10falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.01680.0168falsefalsefalsetruefalseOthernanafalsefalse20073falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3237-0.3237falsefalsefalsetruefalseOthernanafalsefalse20084falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.17630.1763falsefalsefalsetruefalseOthernanafalsefalse20095falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14170.1417falsefalsefalsetruefalseOthernanafalsefalse201015Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000038295MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:80false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 17.45% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -19.38% (quarter ended December 31, 2008 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing81false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:82false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000014011PerformanceTableDataETF column primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000014011PerformanceTableDataETF column primary compact * row dei_LegalEntityAxis compact vanguard_S000014011Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000014011PerformanceTableDataETFfalsefalse1607162 - Schedule - Average Annual Total Returns (Vanguard High Dividend Yield Index Fund ETF)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.13700.1370falsefalsefalsetruefalse2truetruetrue0.09770.0977falsefalsefalsetruefalse3truetruetrue0.14180.1418falsefalsefalsetruefalse4truetruetrue0.14360.1436falsefalsefalsetruefalse5truetruetrue0.14170.1417falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*6false0rr_AverageAnnualReturnSinceInceptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue-0.0150-0.0150falsefalsefalsetruefalse2truetruetrue-0.0092-0.0092falsefalsefalsetruefalse3truetruetrue-0.0104-0.0104falsefalsefalsetruefalse4truetruetrue-0.0093-0.0093falsefalsefalsetruefalse5truetruetrue-0.0105-0.0105falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseSince Inceptionduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMembertruefalseReturn Before Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - ETF SharesReturn Before Taxes0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14170.1417falsefalsefalsetruefalse2truetruetrue-0.0105-0.0105falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - ETF Shares2falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn After Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - ETF SharesReturn After Taxes on Distributions0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.13700.1370falsefalsefalsetruefalse2truetruetrue-0.0150-0.0150falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - ETF Shares Return After Taxes on Distributions3falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn After Taxes on Distributions and Sale of Fund Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - ETF SharesReturn After Taxes on Distributions and Sale of Fund Shares0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.09770.0977falsefalsefalsetruefalse2truetruetrue-0.0092-0.0092falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - ETF Shares Return After Taxes on Distributions and Sale of Fund Shares4falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseBased on Market Valuerr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_BasedOnMarketMemberrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - ETF SharesBased on Market Value0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14180.1418falsefalsefalsetruefalse2truetruetrue-0.0104-0.0104falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - ETF Shares Based on Market Value5falseRowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard High Dividend Yield Index Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000014011Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard High Dividend Yield Index Fund - ETF Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000038295Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseFTSE High Dividend Yield Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_FTSEHighDividendYieldIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard High Dividend Yield Index FundVanguard High Dividend Yield Index Fund - ETF SharesFTSE High Dividend Yield Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.14360.1436falsefalsefalsetruefalse2truetruetrue-0.0093-0.0093falsefalsefalsetruefalseOthernanafalsefalseVanguard High Dividend Yield Index Fund - ETF Shares FTSE High Dividend Yield Index25Average Annual Total Returns (Vanguard High Dividend Yield Index Fund ETF) Vanguard High Dividend Yield Index FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000014011MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance83false0rr_PerformanceTableClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Closing84false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Retail | Vanguard International Explorer FundRetail | Vanguard International Explorer Fundfalsefalsefalsefalsefalse4falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Retail {dei_LegalEntityAxis} : Vanguard International Explorer Fund 11/1/2009 - 10/31/2010 v_Retail_S000004407http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_RetailMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000004407Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseRetail | Vanguard International Explorer Fund86false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return87false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:88false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to provide long-term capital appreciation.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective89false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading90false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund91false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption92false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsehttp://vanguard/role/S000004407ShareholderFeesRetailfalsefalse1607899 - Schedule - Shareholder Fees (Vanguard International Explorer Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseParticipantdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesParticipantStandard0falseUSDfalsefalse$2falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseRetaildei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesRetailStandard0falseUSDfalsefalse$3falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMembertruefalseAll Prospectusesdei_DocumentInformationDocumentAxisdei_DocumentDomaindei_DocumentInformationDocumentAxisexplicitMemberVanguard International Explorer Fund - Investor SharesAll ProspectusesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.02000.0200falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.02000.0200falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee5falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member7false0vanguard_RedemptionFeeParentheticalvanguardfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than two months)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than two months)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.No authoritative reference available.falsefalseRedemption Fee ParentheticalfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0vanguard_RedemptionFeeParentheticaltruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than two months)(on shares held less than two months)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than two months)(on shares held less than two months)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseRedemption Fee Parenthetical6falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member8false0rr_MaximumAccountFeerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsetrue00falsefalsefalsetruefalse2falsefalsetrue00falsefalsefalsetruefalse3truefalsetrue2020falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryInclude the caption "Maximum Account Fees" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., "Maximum Account Maintenance Fee" or "Maximum Cash Management Fee"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph c -Subsection instructions falsefalseAccount Service Fee (for fund account balances below $10,000)falsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_MaximumAccountFeetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsetrue2020falsefalsefalsetruefalseOthernanafalsefalseAccount Service Fee (for fund account balances below $10,000)36Shareholder Fees (Vanguard International Explorer Fund Retail) Vanguard International Explorer FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]93false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption94false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsehttp://vanguard/role/S000004407OperatingExpensesRetailfalsefalse1607890 - Schedule - Annual Fund Operating Expenses (Vanguard International Explorer Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberVanguard International Explorer Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00350.0035falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00350.0035falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00040.0004falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00040.0004falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00390.0039falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00390.0039falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard International Explorer Fund Retail) Vanguard International Explorer FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]95false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE96false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]97false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> truehttp://vanguard/role/S000004407ExpenseExampleNoRedemptionRetailfalsefalse1607887 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard International Explorer Fund Retail)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4040falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue125125falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue219219falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue493493falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberVanguard International Explorer Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4040falsefalsefalsetruefalse2truefalsetrue125125falsefalsefalsetruefalse3truefalsetrue219219falsefalsefalsetruefalse4truefalsetrue493493falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares41Expense Example, No Redemption (Vanguard International Explorer Fund Retail) Vanguard International Explorer Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption98false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading99false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 51%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover100false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:101false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund invests primarily in the equity securities of small-capitalization companies located in numerous countries outside the United States that the advisors believe offer the potential for capital appreciation. In doing so, each advisor considers, among other things, whether the company has the potential for above-average earnings growth, whether the company's securities are attractively valued, and whether the company has a sustainable competitive advantage. The Fund uses multiple investment advisors.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative102false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:103false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of global stock markets. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. In addition, investments in foreign stocks can be riskier than U.S. stock investments. The prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. </p><p>Investment style risk, which is the chance that returns from non-U.S. small-capitalization growth stocks will trail returns from global stock markets. Historically, non-U.S. small-cap stocks have been more volatile in price than the large-cap stocks that dominate the global markets, and they often perform quite differently. </p><p>Currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates. Currency risk is especially high in emerging markets.</p><p>Country/regional risk, which is the chance that world events-such as political upheaval, financial troubles, or natural disasters-will adversely affect the value of securities issued by companies in foreign countries or regions. Because the Fund may invest a large portion of its assets in securities of companies located in any one country or region, including emerging markets, the Fund's performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets</p><p>Manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective. </p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative104false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table105false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index, which has investment characteristics similar to those of the Fund. Since April 1, 2007, the Index returns are adjusted for withholding taxes applicable to Luxemburg holding companies. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative106false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard International Explorer Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart107false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012165Member ~ </div> falsefalseBarChart4.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012165Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012165MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund - Investor SharesVanguard International Explorer FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-041996-11-04falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*4false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalse2truetruefalse-0.2537-0.2537falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.14990.1499falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalseOthernanafalsefalse20013falseRowprimaryElement*5false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalse2truetruefalse-0.2854-0.2854falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalseOthernanafalsefalse20024falseRowprimaryElement*6false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalse2truetruefalse0.42810.4281falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.35210.3521falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalseOthernanafalsefalse20035falseRowprimaryElement*7false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalse2truetruefalse0.11380.1138falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.20380.2038falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalseOthernanafalsefalse20046falseRowprimaryElement*8false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalse2truetruefalse0.09130.0913falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.10670.1067falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalseOthernanafalsefalse20057falseRowprimaryElement*9false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalse2truetruefalse0.12720.1272falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.19110.1911falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalseOthernanafalsefalse20068falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalseOthernanafalsefalse20079falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalseOthernanafalsefalse200810falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalseOthernanafalsefalse200911falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalseOthernanafalsefalse2010111Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012165MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:108false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 32.45% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -23.05% (quarter ended September 30, 2008 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing109false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:110false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000004407PerformanceTableDataRetailfalsefalse1607904 - Schedule - Average Annual Total Returns (Vanguard International Explorer Fund Retail)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.22330.2233falsefalsefalsetruefalse2truetruetrue0.15010.1501falsefalsefalsetruefalse3truetruetrue0.18910.1891falsefalsefalsetruefalse4truetruetrue0.22550.2255falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*4false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04610.0461falsefalsefalsetruefalse2truetruetrue0.04800.0480falsefalsefalsetruefalse3truetruetrue0.04200.0420falsefalsefalsetruefalse4truetruetrue0.05700.0570falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseFive Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*5false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.07270.0727falsefalsefalsetruefalse2truetruetrue0.07010.0701falsefalsefalsetruefalse3truetruetrue0.08590.0859falsefalsefalsetruefalse4truetruetrue0.08200.0820falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseTen Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMembertruefalseReturn Before Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberVanguard International Explorer FundVanguard International Explorer Fund - Investor SharesReturn Before Taxes0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.22550.2255falsefalsefalsetruefalse2truetruetrue0.05700.0570falsefalsefalsetruefalse3truetruetrue0.08200.0820falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares2falseRowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn After Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberVanguard International Explorer FundVanguard International Explorer Fund - Investor SharesReturn After Taxes on Distributions0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.22330.2233falsefalsefalsetruefalse2truetruetrue0.04610.0461falsefalsefalsetruefalse3truetruetrue0.07270.0727falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares Return After Taxes on Distributions3falseRowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn After Taxes on Distributions and Sale of Fund Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberVanguard International Explorer FundVanguard International Explorer Fund - Investor SharesReturn After Taxes on Distributions and Sale of Fund Shares0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15010.1501falsefalsefalsetruefalse2truetruetrue0.04800.0480falsefalsefalsetruefalse3truetruetrue0.07010.0701falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares Return After Taxes on Distributions and Sale of Fund Shares4falseRowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseStandard & Poor's EPAC SmallCap Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_StandardnPoorsEPACSmallCapIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard International Explorer FundVanguard International Explorer Fund - Investor SharesStandard & Poor's EPAC SmallCap Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.18910.1891falsefalsefalsetruefalse2truetruetrue0.04200.0420falsefalsefalsetruefalse3truetruetrue0.08590.0859falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares Standard & Poor's EPAC SmallCap Index34Average Annual Total Returns (Vanguard International Explorer Fund Retail) Vanguard International Explorer FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance111false0rr_PerformanceTableClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Closing112false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Participant | Vanguard International Explorer FundParticipant | Vanguard International Explorer Fundfalsefalsefalsefalsefalse5falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Participant {dei_LegalEntityAxis} : Vanguard International Explorer Fund 11/1/2009 - 10/31/2010 v_Participant_S000004407http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_ParticipantMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000004407Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseParticipant | Vanguard International Explorer Fund114false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return115false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:116false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to provide long-term capital appreciation.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective117false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading118false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund119false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption120false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsehttp://vanguard/role/S000004407ShareholderFeesParticipantfalsefalse1607927 - Schedule - Shareholder Fees (Vanguard International Explorer Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseParticipantdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesParticipantStandard0falseUSDfalsefalse$2falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseRetaildei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesRetailStandard0falseUSDfalsefalse$3falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMembertruefalseAll Prospectusesdei_DocumentInformationDocumentAxisdei_DocumentDomaindei_DocumentInformationDocumentAxisexplicitMemberVanguard International Explorer Fund - Investor SharesAll ProspectusesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.02000.0200falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.02000.0200falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee5falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member7false0vanguard_RedemptionFeeParentheticalvanguardfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than two months)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than two months)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.No authoritative reference available.falsefalseRedemption Fee ParentheticalfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0vanguard_RedemptionFeeParentheticaltruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than two months)(on shares held less than two months)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than two months)(on shares held less than two months)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseRedemption Fee Parenthetical35Shareholder Fees (Vanguard International Explorer Fund Participant) Vanguard International Explorer FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]121false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption122false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsehttp://vanguard/role/S000004407OperatingExpensesParticipantfalsefalse1607934 - Schedule - Annual Fund Operating Expenses (Vanguard International Explorer Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberVanguard International Explorer Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00350.0035falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00350.0035falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00040.0004falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00040.0004falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00390.0039falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00390.0039falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard International Explorer Fund Participant) Vanguard International Explorer FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004407MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]123false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE124false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]125false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member ~ </div> truehttp://vanguard/role/S000004407ExpenseExampleNoRedemptionParticipantfalsefalse1607931 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard International Explorer Fund Participant)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4040falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue125125falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue219219falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue493493falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberVanguard International Explorer Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4040falsefalsefalsetruefalse2truefalsetrue125125falsefalsefalsetruefalse3truefalsetrue219219falsefalsefalsetruefalse4truefalsetrue493493falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares41Expense Example, No Redemption (Vanguard International Explorer Fund Participant) Vanguard International Explorer Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004407MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption126false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading127false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 51%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover128false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:129false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund invests primarily in the equity securities of small-capitalization companies located in numerous countries outside the United States that the advisors believe offer the potential for capital appreciation. In doing so, each advisor considers, among other things, whether the company has the potential for above-average earnings growth, whether the company's securities are attractively valued, and whether the company has a sustainable competitive advantage. The Fund uses multiple investment advisors.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative130false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:131false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of global stock markets. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices. In addition, investments in foreign stocks can be riskier than U.S. stock investments. The prices of foreign stocks and the prices of U.S. stocks have, at times, moved in opposite directions. </p><p>Investment style risk, which is the chance that returns from non-U.S. small-capitalization growth stocks will trail returns from global stock markets. Historically, non-U.S. small-cap stocks have been more volatile in price than the large-cap stocks that dominate the global markets, and they often perform quite differently. </p><p>Currency risk, which is the chance that the value of a foreign investment, measured in U.S. dollars, will decrease because of unfavorable changes in currency exchange rates. Currency risk is especially high in emerging markets.</p><p>Country/regional risk, which is the chance that world events-such as political upheaval, financial troubles, or natural disasters-will adversely affect the value of securities issued by companies in foreign countries or regions. Because the Fund may invest a large portion of its assets in securities of companies located in any one country or region, including emerging markets, the Fund's performance may be hurt disproportionately by the poor performance of its investments in that area. Country/regional risk is especially high in emerging markets</p><p>Manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective. </p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative132false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table133false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index, which has investment characteristics similar to those of the Fund. Since April 1, 2007, the Index returns are adjusted for withholding taxes applicable to Luxembourg holding companies. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative134false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard International Explorer Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart135false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012165Member ~ </div> falsefalseBarChart5.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012165Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012165MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberVanguard International Explorer Fund - Investor SharesVanguard International Explorer FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-041996-11-04falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*4false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalse2truetruefalse-0.2537-0.2537falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.14990.1499falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalseOthernanafalsefalse20013falseRowprimaryElement*5false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalse2truetruefalse-0.2854-0.2854falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalseOthernanafalsefalse20024falseRowprimaryElement*6false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalse2truetruefalse0.42810.4281falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.35210.3521falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalseOthernanafalsefalse20035falseRowprimaryElement*7false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalse2truetruefalse0.11380.1138falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.20380.2038falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalseOthernanafalsefalse20046falseRowprimaryElement*8false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalse2truetruefalse0.09130.0913falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.10670.1067falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalseOthernanafalsefalse20057falseRowprimaryElement*9false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalse2truetruefalse0.12720.1272falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.19110.1911falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalseOthernanafalsefalse20068falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalseOthernanafalsefalse20079falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalseOthernanafalsefalse200810falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalseOthernanafalsefalse200911falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalseOthernanafalsefalse2010111Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012165MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:136false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 32.45% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -23.05% (quarter ended September 30, 2008 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing137false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:138false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004407PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004407PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000004407Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000004407PerformanceTableDataParticipantfalsefalse1607928 - Schedule - Average Annual Total Returns (Vanguard International Explorer Fund Participant)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.18910.1891falsefalsefalsetruefalse2truetruetrue0.22550.2255falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*4false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04200.0420falsefalsefalsetruefalse2truetruetrue0.05700.0570falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseFive Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*5false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.08590.0859falsefalsefalsetruefalse2truetruetrue0.08200.0820falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseTen Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMembertruefalseReturn Before Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberVanguard International Explorer FundVanguard International Explorer Fund - Investor SharesReturn Before Taxes0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.22550.2255falsefalsefalsetruefalse2truetruetrue0.05700.0570falsefalsefalsetruefalse3truetruetrue0.08200.0820falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares2falseRowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard International Explorer Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004407Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard International Explorer Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012165Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseStandard & Poor's EPAC SmallCap Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_StandardnPoorsEPACSmallCapIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard International Explorer FundVanguard International Explorer Fund - Investor SharesStandard & Poor's EPAC SmallCap Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.18910.1891falsefalsefalsetruefalse2truetruetrue0.04200.0420falsefalsefalsetruefalse3truetruetrue0.08590.0859falsefalsefalsetruefalseOthernanafalsefalseVanguard International Explorer Fund - Investor Shares Standard & Poor's EPAC SmallCap Index32Average Annual Total Returns (Vanguard International Explorer Fund Participant) Vanguard International Explorer FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000004407MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance139false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Retail | Vanguard Mid-Cap Growth FundRetail | Vanguard Mid-Cap Growth Fundfalsefalsefalsefalsefalse6falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Retail {dei_LegalEntityAxis} : Vanguard Mid-Cap Growth Fund 11/1/2009 - 10/31/2010 v_Retail_S000004408http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_RetailMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000004408Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseRetail | Vanguard Mid-Cap Growth Fund141false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return142false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:143false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to provide long-term capital appreciation.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective144false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading145false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund146false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption147false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsehttp://vanguard/role/S000004408ShareholderFeesRetailfalsefalse1607217 - Schedule - Shareholder Fees (Vanguard Mid-Cap Growth Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee5falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member8false0rr_MaximumAccountFeerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue2020falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryInclude the caption "Maximum Account Fees" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., "Maximum Account Maintenance Fee" or "Maximum Cash Management Fee"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph c -Subsection instructions falsefalseAccount Service Fee (for fund account balances below $10,000)falsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_MaximumAccountFeetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue2020falsefalsefalsetruefalseOthernanafalsefalseAccount Service Fee (for fund account balances below $10,000)15Shareholder Fees (Vanguard Mid-Cap Growth Fund Retail) Vanguard Mid-Cap Growth Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]148false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption149false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsehttp://vanguard/role/S000004408OperatingExpensesRetailfalsefalse1607213 - Schedule - Annual Fund Operating Expenses (Vanguard Mid-Cap Growth Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00480.0048falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00480.0048falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00510.0051falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00510.0051falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard Mid-Cap Growth Fund Retail) Vanguard Mid-Cap Growth FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]150false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE151false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]152false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> truehttp://vanguard/role/S000004408ExpenseExampleNoRedemptionRetailfalsefalse1607212 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard Mid-Cap Growth Fund Retail)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue5252falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue164164falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue285285falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue640640falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue5252falsefalsefalsetruefalse2truefalsetrue164164falsefalsefalsetruefalse3truefalsetrue285285falsefalsefalsetruefalse4truefalsetrue640640falsefalsefalsetruefalseOthernanafalsefalseVanguard Mid-Cap Growth Fund - Investor Shares41Expense Example, No Redemption (Vanguard Mid-Cap Growth Fund Retail) Vanguard Mid-Cap Growth Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption153false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading154false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 88%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover155false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:156false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund invests at least 80% of its assets in common stocks of medium-size companies. In selecting investments, each advisor invests in those medium-size companies that it believes have the best prospects for future growth. The Fund uses multiple investment advisors. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative157false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:158false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.</p><p>Investment style risk, which is the chance that returns from mid-capitalization growth stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Mid-cap stocks tend to have greater volatility than large-cap stocks because, among other things, medium-size companies are more sensitive to changing economic conditions.</p><p>Manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective. </p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative159false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table160false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. Prior to June 29, 2002, Vanguard Mid-Cap Growth Fund was organized as Provident Investment Counsel Mid Cap Fund A (PIC Fund) and was sponsored by Provident Investment Counsel, Inc. A reorganization brought the Fund into The Vanguard Group; the investment objectives, risks, and policies of the Fund remain substantially similar. Return figures do not reflect the 5.75% maximum sales charge imposed on purchases of shares of the PIC Fund prior to its reorganization into the Fund on June 29, 2002. If the charge were reflected, returns would be less than those shown. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative161false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard Mid-Cap Growth Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart162false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012166Member ~ </div> falsefalseBarChart6.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012166Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012166MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesVanguard Mid-Cap Growth FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001997-12-311997-12-31falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*4false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalse2truetruefalse-0.2537-0.2537falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.14990.1499falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2537-0.2537falsefalsefalsetruefalseOthernanafalsefalse20013falseRowprimaryElement*5false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalse2truetruefalse-0.2854-0.2854falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2854-0.2854falsefalsefalsetruefalseOthernanafalsefalse20024falseRowprimaryElement*6false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalse2truetruefalse0.42810.4281falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.35210.3521falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.42810.4281falsefalsefalsetruefalseOthernanafalsefalse20035falseRowprimaryElement*7false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalse2truetruefalse0.11380.1138falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.20380.2038falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11380.1138falsefalsefalsetruefalseOthernanafalsefalse20046falseRowprimaryElement*8false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalse2truetruefalse0.09130.0913falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.10670.1067falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09130.0913falsefalsefalsetruefalseOthernanafalsefalse20057falseRowprimaryElement*9false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalse2truetruefalse0.12720.1272falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.19110.1911falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.12720.1272falsefalsefalsetruefalseOthernanafalsefalse20068falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14690.1469falsefalsefalsetruefalseOthernanafalsefalse20079falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3959-0.3959falsefalsefalsetruefalseOthernanafalsefalse200810falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.38420.3842falsefalsefalsetruefalseOthernanafalsefalse200911falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.23830.2383falsefalsefalsetruefalseOthernanafalsefalse2010111Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012166MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:163false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 21.10% (quarter ended December 31, 2001 ), and the lowest return for a quarter was -30.22% (quarter ended September 30, 2001 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing164false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:165false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000004408PerformanceTableDataRetailfalsefalse1607224 - Schedule - Average Annual Total Returns (Vanguard Mid-Cap Growth Fund Retail)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.23810.2381falsefalsefalsetruefalse2truetruetrue0.15510.1551falsefalsefalsetruefalse3truetruetrue0.26380.2638falsefalsefalsetruefalse4truetruetrue0.23830.2383falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*4false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.05210.0521falsefalsefalsetruefalse2truetruetrue0.04960.0496falsefalsefalsetruefalse3truetruetrue0.04880.0488falsefalsefalsetruefalse4truetruetrue0.06010.0601falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseFive Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*5false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.01780.0178falsefalsefalsetruefalse2truetruetrue0.01760.0176falsefalsefalsetruefalse3truetruetrue0.03120.0312falsefalsefalsetruefalse4truetruetrue0.02170.0217falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseTen Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000004408MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMembertruefalseReturn Before Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberVanguard Mid-Cap Growth FundVanguard Mid-Cap Growth Fund - Investor SharesReturn Before Taxes0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.23830.2383falsefalsefalsetruefalse2truetruetrue0.06010.0601falsefalsefalsetruefalse3truetruetrue0.02170.0217falsefalsefalsetruefalseOthernanafalsefalseVanguard Mid-Cap Growth Fund - Investor Shares2falseRowdei_LegalEntityAxisAxisvanguard_S000004408MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn After Taxes on Distributionsrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsMemberrr_PerformanceMeasureAxisexplicitMemberVanguard Mid-Cap Growth FundVanguard Mid-Cap Growth Fund - Investor SharesReturn After Taxes on Distributions0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.23810.2381falsefalsefalsetruefalse2truetruetrue0.05210.0521falsefalsefalsetruefalse3truetruetrue0.01780.0178falsefalsefalsetruefalseOthernanafalsefalseVanguard Mid-Cap Growth Fund - Investor Shares Return After Taxes on Distributions3falseRowdei_LegalEntityAxisAxisvanguard_S000004408MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseReturn After Taxes on Distributions and Sale of Fund Sharesrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldirr_AfterTaxesOnDistributionsAndSalesMemberrr_PerformanceMeasureAxisexplicitMemberVanguard Mid-Cap Growth FundVanguard Mid-Cap Growth Fund - Investor SharesReturn After Taxes on Distributions and Sale of Fund Shares0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.15510.1551falsefalsefalsetruefalse2truetruetrue0.04960.0496falsefalsefalsetruefalse3truetruetrue0.01760.0176falsefalsefalsetruefalseOthernanafalsefalseVanguard Mid-Cap Growth Fund - Investor Shares Return After Taxes on Distributions and Sale of Fund Shares4falseRowdei_LegalEntityAxisAxisvanguard_S000004408MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell Midcap Growth Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RussellMidcapGrowthIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard Mid-Cap Growth FundVanguard Mid-Cap Growth Fund - Investor SharesRussell Midcap Growth Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.26380.2638falsefalsefalsetruefalse2truetruetrue0.04880.0488falsefalsefalsetruefalse3truetruetrue0.03120.0312falsefalsefalsetruefalseOthernanafalsefalseVanguard Mid-Cap Growth Fund - Investor Shares Russell Midcap Growth Index34Average Annual Total Returns (Vanguard Mid-Cap Growth Fund Retail) Vanguard Mid-Cap Growth FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000004408MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance166false0rr_PerformanceTableClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Closing167false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Participant | Vanguard Mid-Cap Growth FundParticipant | Vanguard Mid-Cap Growth Fundfalsefalsefalsefalsefalse7falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Participant {dei_LegalEntityAxis} : Vanguard Mid-Cap Growth Fund 11/1/2009 - 10/31/2010 v_Participant_S000004408http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_ParticipantMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000004408Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseParticipant | Vanguard Mid-Cap Growth Fund169false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return170false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:171false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to provide long-term capital appreciation.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective172false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading173false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund174false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption175false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsehttp://vanguard/role/S000004408ShareholderFeesParticipantfalsefalse1607261 - Schedule - Shareholder Fees (Vanguard Mid-Cap Growth Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee14Shareholder Fees (Vanguard Mid-Cap Growth Fund Participant) Vanguard Mid-Cap Growth FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]176false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption177false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsehttp://vanguard/role/S000004408OperatingExpensesParticipantfalsefalse1607259 - Schedule - Annual Fund Operating Expenses (Vanguard Mid-Cap Growth Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00480.0048falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00480.0048falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00510.0051falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00510.0051falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard Mid-Cap Growth Fund Participant) Vanguard Mid-Cap Growth FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004408MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]178false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE179false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]180false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member ~ </div> truehttp://vanguard/role/S000004408ExpenseExampleNoRedemptionParticipantfalsefalse1607265 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard Mid-Cap Growth Fund Participant)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue5252falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue164164falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue285285falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue640640falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue5252falsefalsefalsetruefalse2truefalsetrue164164falsefalsefalsetruefalse3truefalsetrue285285falsefalsefalsetruefalse4truefalsetrue640640falsefalsefalsetruefalseOthernanafalsefalseVanguard Mid-Cap Growth Fund - Investor Shares41Expense Example, No Redemption (Vanguard Mid-Cap Growth Fund Participant) Vanguard Mid-Cap Growth Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004408MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption181false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading182false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 88%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover183false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:184false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund invests at least 80% of its assets in common stocks of medium-size companies. In selecting investments, each advisor invests in those medium-size companies that it believes have the best prospects for future growth. The Fund uses multiple investment advisors. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative185false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:186false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.</p><p>Investment style risk, which is the chance that returns from mid-capitalization growth stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Mid-cap stocks tend to have greater volatility than large-cap stocks because, among other things, medium-size companies are more sensitive to changing economic conditions.</p><p>Manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective. </p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative187false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table188false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. Prior to June 29, 2002, Vanguard Mid-Cap Growth Fund was organized as Provident Investment Counsel Mid Cap Fund A (PIC Fund) and was sponsored by Provident Investment Counsel, Inc. A reorganization brought the Fund into The Vanguard Group; the investment objectives, risks, and policies of the Fund remain substantially similar. Return figures do not reflect the 5.75% maximum sales charge imposed on purchases of shares of the PIC Fund prior to its reorganization into the Fund on June 29, 2002. If the charge were reflected, returns would be less than those shown. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of relevant market index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative189false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard Mid-Cap Growth Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart190false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012166Member ~ </div> falsefalseBarChart7.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012166Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012166MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Mid-Cap Growth Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012166Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberVanguard Mid-Cap Growth Fund - Investor SharesVanguard Mid-Cap Growth FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001997-12-311997-12-31falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*4false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalse2truetruefalse-0.2537-0.2537falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.14990.1499falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2537-0.2537falsefalsefalsetruefalseOthernanafalsefalse20013falseRowprimaryElement*5false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalse2truetruefalse-0.2854-0.2854falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2854-0.2854falsefalsefalsetruefalseOthernanafalsefalse20024falseRowprimaryElement*6false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalse2truetruefalse0.42810.4281falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.35210.3521falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.42810.4281falsefalsefalsetruefalseOthernanafalsefalse20035falseRowprimaryElement*7false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalse2truetruefalse0.11380.1138falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.20380.2038falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.11380.1138falsefalsefalsetruefalseOthernanafalsefalse20046falseRowprimaryElement*8false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalse2truetruefalse0.09130.0913falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.10670.1067falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.09130.0913falsefalsefalsetruefalseOthernanafalsefalse20057falseRowprimaryElement*9false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalse2truetruefalse0.12720.1272falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.19110.1911falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.12720.1272falsefalsefalsetruefalseOthernanafalsefalse20068falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14690.1469falsefalsefalsetruefalseOthernanafalsefalse20079falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3959-0.3959falsefalsefalsetruefalseOthernanafalsefalse200810falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.38420.3842falsefalsefalsetruefalseOthernanafalsefalse200911falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.23830.2383falsefalsefalsetruefalseOthernanafalsefalse2010111Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012166MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:191false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 21.10% (quarter ended December 31, 2001 ), and the lowest return for a quarter was -30.22% (quarter ended September 30, 2001 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing192false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:193false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004408PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004408PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000004408Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000004408PerformanceTableDataParticipantfalsefalse1607257 - Schedule - Average Annual Total Returns (Vanguard Mid-Cap Growth Fund Participant)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.26380.2638falsefalsefalsetruefalse2truetruetrue0.23830.2383falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*4false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04880.0488falsefalsefalsetruefalse2truetruetrue0.06010.0601falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseFive Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*5false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03120.0312falsefalsefalsetruefalse2truetruetrue0.02170.0217falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseTen Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000004408MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Mid-Cap Growth Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004408Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Mid-Cap Growth Fund - 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Investor SharesRussell Midcap Growth Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.26380.2638falsefalsefalsetruefalse2truetruetrue0.04880.0488falsefalsefalsetruefalse3truetruetrue0.03120.0312falsefalsefalsetruefalseOthernanafalsefalseVanguard Mid-Cap Growth Fund - Investor Shares Russell Midcap Growth Index32Average Annual Total Returns (Vanguard Mid-Cap Growth Fund Participant) Vanguard Mid-Cap Growth FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000004408MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance194false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Retail | Vanguard Selected Value FundRetail | Vanguard Selected Value Fundfalsefalsefalsefalsefalse8falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Retail {dei_LegalEntityAxis} : Vanguard Selected Value Fund 11/1/2009 - 10/31/2010 v_Retail_S000004409http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_RetailMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000004409Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseRetail | Vanguard Selected Value Fund196false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return197false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:198false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to provide long-term capital appreciation and income.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective199false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading200false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund201false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption202false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsehttp://vanguard/role/S000004409ShareholderFeesRetailfalsefalse1607964 - Schedule - Shareholder Fees (Vanguard Selected Value Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseParticipantdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesParticipantStandard0falseUSDfalsefalse$2falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseRetaildei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesRetailStandard0falseUSDfalsefalse$3falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMembertruefalseAll Prospectusesdei_DocumentInformationDocumentAxisdei_DocumentDomaindei_DocumentInformationDocumentAxisexplicitMemberVanguard Selected Value Fund - Investor SharesAll ProspectusesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.01000.0100falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.01000.0100falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee5falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member7false0vanguard_RedemptionFeeParentheticalvanguardfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than one year)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than one year)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.No authoritative reference available.falsefalseRedemption Fee ParentheticalfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0vanguard_RedemptionFeeParentheticaltruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than one year)(on shares held less than one year)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than one year)(on shares held less than one year)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseRedemption Fee Parenthetical6falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member8false0rr_MaximumAccountFeerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsetrue00falsefalsefalsetruefalse2falsefalsetrue00falsefalsefalsetruefalse3truefalsetrue2020falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryInclude the caption "Maximum Account Fees" only if the Fund charges these fees. A Fund may omit other captions if the Fund does not charge the fees or expenses covered by the captions. Disclose account fees that may be charged to a typical investor in the Fund; fees that apply to only a limited number of shareholders based on their particular circumstances need not be disclosed. Include a caption describing the maximum account fee (e.g., "Maximum Account Maintenance Fee" or "Maximum Cash Management Fee"). State the maximum annual account fee as either a fixed dollar amount or a percentage of assets. Include in a parenthetical to the caption the basis on which any percentage is calculated. If an account fee is charged only to accounts that do not meet a certain threshold (e.g., accounts under $5)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph c -Subsection instructions falsefalseAccount Service Fee (for fund account balances below $10,000)falsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_MaximumAccountFeetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truefalsetrue2020falsefalsefalsetruefalseOthernanafalsefalseAccount Service Fee (for fund account balances below $10,000)36Shareholder Fees (Vanguard Selected Value Fund Retail) Vanguard Selected Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]203false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption204false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsehttp://vanguard/role/S000004409OperatingExpensesRetailfalsefalse1607959 - Schedule - Annual Fund Operating Expenses (Vanguard Selected Value Fund Retail)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Selected Value Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00440.0044falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00440.0044falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00470.0047falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00470.0047falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard Selected Value Fund Retail) Vanguard Selected Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]205false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE206false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]207false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> truehttp://vanguard/role/S000004409ExpenseExampleNoRedemptionRetailfalsefalse1607952 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard Selected Value Fund Retail)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4848falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue151151falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue263263falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue591591falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Selected Value Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4848falsefalsefalsetruefalse2truefalsetrue151151falsefalsefalsetruefalse3truefalsetrue263263falsefalsefalsetruefalse4truefalsetrue591591falsefalsefalsetruefalseOthernanafalsefalseVanguard Selected Value Fund - Investor Shares41Expense Example, No Redemption (Vanguard Selected Value Fund Retail) Vanguard Selected Value Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption208false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading209false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 22%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover210false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:211false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund invests mainly in the stocks of medium-size U.S. companies, choosing stocks considered by an advisor to be undervalued. Undervalued stocks are generally those that are out of favor with investors and are trading at prices that the advisor feels are below-average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields. The Fund uses multiple investment advisors. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative212false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:213false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.</p><p>Investment style risk, which is the chance that returns from mid-capitalization value stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Mid-cap stocks tend to have greater volatility than large-cap stocks because, among other things, medium-size companies are more sensitive to changing economic conditions.</p><p>Manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective. </p><p>Asset concentration risk, which is the chance that the Fund's performance may be adversely affected by the poor performance of relatively few stocks.</p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative214false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table215false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative216false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard Selected Value Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart217false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012167Member ~ </div> falsefalseBarChart8.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012167Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012167MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund - Investor SharesVanguard Selected Value FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-02-151996-02-15falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*4false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalse2truetruefalse-0.2537-0.2537falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.14990.1499falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14990.1499falsefalsefalsetruefalseOthernanafalsefalse20013falseRowprimaryElement*5false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalse2truetruefalse-0.2854-0.2854falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOthernanafalsefalse20024falseRowprimaryElement*6false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalse2truetruefalse0.42810.4281falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.35210.3521falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.35210.3521falsefalsefalsetruefalseOthernanafalsefalse20035falseRowprimaryElement*7false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalse2truetruefalse0.11380.1138falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.20380.2038falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20380.2038falsefalsefalsetruefalseOthernanafalsefalse20046falseRowprimaryElement*8false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalse2truetruefalse0.09130.0913falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.10670.1067falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10670.1067falsefalsefalsetruefalseOthernanafalsefalse20057falseRowprimaryElement*9false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalse2truetruefalse0.12720.1272falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.19110.1911falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.19110.1911falsefalsefalsetruefalseOthernanafalsefalse20068falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOthernanafalsefalse20079falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOthernanafalsefalse200810falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.36260.3626falsefalsefalsetruefalseOthernanafalsefalse200911falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.19440.1944falsefalsefalsetruefalseOthernanafalsefalse2010111Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012167MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:218false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 19.58% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -19.51% (quarter ended December 31, 2008 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing219false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:220false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000004409PerformanceTableDataRetailfalsefalse1607957 - Schedule - Average Annual Total Returns (Vanguard Selected Value Fund Retail)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.19170.1917falsefalsefalsetruefalse2truetruetrue0.13000.1300falsefalsefalsetruefalse3truetruetrue0.24750.2475falsefalsefalsetruefalse4truetruetrue0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*4false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.03740.0374falsefalsefalsetruefalse2truetruetrue0.03730.0373falsefalsefalsetruefalse3truetruetrue0.04080.0408falsefalsefalsetruefalse4truetruetrue0.04530.0453falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseFive Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*5false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.08110.0811falsefalsefalsetruefalse2truetruetrue0.07600.0760falsefalsefalsetruefalse3truetruetrue0.08070.0807falsefalsefalsetruefalse4truetruetrue0.08830.0883falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseTen Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000004409MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Selected Value Fund - 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Investor SharesReturn After Taxes on Distributions and Sale of Fund Shares0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.13000.1300falsefalsefalsetruefalse2truetruetrue0.03730.0373falsefalsefalsetruefalse3truetruetrue0.07600.0760falsefalsefalsetruefalseOthernanafalsefalseVanguard Selected Value Fund - Investor Shares Return After Taxes on Distributions and Sale of Fund Shares4falseRowdei_LegalEntityAxisAxisvanguard_S000004409MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell Midcap Value Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RussellMidcapValueIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard Selected Value FundVanguard Selected Value Fund - Investor SharesRussell Midcap Value Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.24750.2475falsefalsefalsetruefalse2truetruetrue0.04080.0408falsefalsefalsetruefalse3truetruetrue0.08070.0807falsefalsefalsetruefalseOthernanafalsefalseVanguard Selected Value Fund - Investor Shares Russell Midcap Value Index34Average Annual Total Returns (Vanguard Selected Value Fund Retail) Vanguard Selected Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000004409MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance221false0rr_PerformanceTableClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Actual after-tax returns depend on your tax situation and may differ from those shown in the preceding table. When after-tax returns are calculated, it is assumed that the shareholder was in the highest individual federal marginal income tax bracket at the time of each distribution of income or capital gains or upon redemption. State and local income taxes are not reflected in the calculations. Please note that after-tax returns are not relevant for a shareholder who holds fund shares in a tax-deferred account, such as an individual retirement account or a 401(k) plan. Also, figures captioned Return After Taxes on Distributions and Sale of Fund Shares will be higher than other figures for the same period if a capital loss occurs upon redemption and results in an assumed tax deduction for the shareholder.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a table showing the Fund's (A) average annual total return; (B) average annual total return (after taxes on distributions); and (C) average annual total return (after taxes on distributions and redemption). A Money Market Fund should show only the returns described in clause (A) of the preceding sentence. All returns should be shown for 1-, 5-, and 10- calendar year periods ending on the date of the most recently completed calendar year (or for the life of the Fund, if shorter), but only for periods subsequent to the effective date of the Fund's registration statement. The table also shouldshow the returns of an appropriate broadbased securities market index as defined in Instruction 5 to Item 22(b)(7) for the same periods. A Fund that has been in existence for more than 10 years also may include returns for the life of the Fund. A Money Market Fund may provide the Fund's 7-day yield ending on the date of the most recent calendar year or disclose a toll-free (or collect) telephone number that investors can use to obtain the Fund's current 7-day yield. For a Fund (other than a Money Market Fund or a Fund described in General Instruction C.3.(d)(iii)), provide the information in the following table with the specified captions AVERAGE ANNUAL TOTAL RETURNS (For the periods ended December 31, _____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Subsection b falsefalsePerformance Table Closing222false0natruenanaNo definition available.falsetruefalsefalsefalsefalsefalsefalsefalsefalsehttp://xbrl.sec.gov/rr/role/riskreturn1falsefalsefalse00Participant | Vanguard Selected Value FundParticipant | Vanguard Selected Value Fundfalsefalsefalsefalsefalse9falsefalsetruefalse{dei_DocumentInformationDocumentAxis} : Participant {dei_LegalEntityAxis} : Vanguard Selected Value Fund 11/1/2009 - 10/31/2010 v_Participant_S000004409http://www.sec.gov/CIK0001004655duration2009-11-01T00:00:002010-10-31T00:00:00falsefalsevanguard_ParticipantMemberdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberfalsefalsevanguard_S000004409Memberdei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberpureStandardhttp://www.xbrl.org/2003/instancepurexbrli0OthernaNo definition available.No authoritative reference available.falsefalseParticipant | Vanguard Selected Value Fund224false0rr_RiskReturnHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Risk/ReturnfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Investment Objectives/Goals Include the following information, in plain English under rule 421(d) under the Securities Act, in the order and subject matter indicatedReference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 falsefalseRisk/Return225false0rr_ObjectiveHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Investment ObjectivefalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective:226false0rr_ObjectivePrimaryTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund seeks to provide long-term capital appreciation and income.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringInvestment Objectives/Goals. Disclose the Fund's investment objectives or goals. A Fund also may identify its type or category (e.g., that it is a Money Market Fund or a balanced fund).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 2 -Subsection a falsefalseInvestment objective227false0rr_ExpenseHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Fees and ExpensesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Summary Fee Table Includes the following information, in plain English under rule 421(d) under the Securities Act, after Item 2 Fees and expenses of the Fund This table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Shareholder Fees (fees paid directly from your investment) Example This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then you redeem all of your shares at the end of those periods. The Example also assumes that your investment has a 5% return per year and that the Fund's operating expenses remained the same. Although your actual costs may be higher or lower, based on these assumptions your costs would be You would pay the following expenses if you did not redeem your shares The Example does not reflect sales charges (loads) on reinvested dividends [and other distributions]. If these sales charges (loads) were included, your costs would be higher. Portfolio Turnover The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover may indicate higher transaction costs. These costs, which are not reflected in annual fund operating expenses or in the example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was __% of the average value of its whole portfolio. Instructions. A.3.instructions.6 New Funds. For purposes of this Item, a "New Fund" is a Fund that does not include in Form N-1A financial statements reporting operating results or that includes financial statements for the Fund's initial fiscal year reporting operating results for a period of 6 months or less. The following Instructions apply to New Funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph d -Subsection instructions falsefalseExpenses Heading228false0rr_ExpenseNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThis table describes the fees and expenses that you may pay if you buy and hold shared of the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $[_____] in [name of fund family] funds. Include the narrative explanations in the order indicated. A Fund may modify the narrative explanations if the explanation contains comparable information to that shown.The narrative explanation regarding sales charge discounts is only required by a Fund that offers such discounts and should specify the minimum level of investment required to qualify for a discount. Modify the narrative explanation to state that Fund shares are sold on a national securities exchange at the end of the time periods indicated, and that brokerage commissions for buying and selling Fund shares through a broker are not reflected.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph b -Subsection instructions falsefalseFees and Expenses of the Fund229false0rr_ShareholderFeesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Shareholder Fees (Fees paid directly from your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringShareholder Fees (fees paid directly from your investment).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subsection table falsefalseShareholder Fees Caption230false0rr_ShareholderFeesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsehttp://vanguard/role/S000004409ShareholderFeesParticipantfalsefalse1607986 - Schedule - Shareholder Fees (Vanguard Selected Value Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseParticipantdei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_ParticipantMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesParticipantStandard0falseUSDfalsefalse$2falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00truefalseShare Classesrr_ProspectusShareClassAxisrr_ShareClassDomainrr_ProspectusShareClassAxisexplicitMemberfalsefalseRetaildei_DocumentInformationDocumentAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RetailMemberdei_DocumentInformationDocumentAxisexplicitMemberShare ClassesRetailStandard0falseUSDfalsefalse$3falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMembertruefalseAll Prospectusesdei_DocumentInformationDocumentAxisdei_DocumentDomaindei_DocumentInformationDocumentAxisexplicitMemberVanguard Selected Value Fund - Investor SharesAll ProspectusesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member3false0rr_MaximumCumulativeSalesChargeOverOfferingPricerrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalseSales charge (load) imposed on purchasesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_MaximumCumulativeSalesChargeOverOfferingPricetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on purchases2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member4false0rr_MaximumCumulativeSalesChargeOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Purchases (as a percentage of offering price). If a sales charge (load) is imposed on shares purchased with reinvested capital gains distributions or returns of capital, include the bracketed words in the third caption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection table falsefalsePurchase FeefalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_MaximumCumulativeSalesChargeOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.00000.0000falsefalsefalsetruefalseOthernanafalsefalsePurchase Fee3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member5false0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOtherrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureMaximum Sales Charge (Load) Imposed on Reinvested Dividends[and other Distributions] (as a percentage of ____)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 3 -Subsection table falsefalseSales charge (load) imposed on reinvested dividendsfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOthertruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue00falsefalsefalsetruefalseOthernanafalsefalseSales charge (load) imposed on reinvested dividends4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member6false0rr_RedemptionFeeOverRedemptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsetruenegated1falsetruetrue00falsefalsefalsetruefalse2falsetruetrue00falsefalsefalsetruefalse3truetruetrue0.01000.0100falsefalsefalsetruefalseOtherrr:NonPositivePure4Typepure"Redemption Fee" (as a percentage of amount redeemed, if applicable) If the Fund is an Exchange-Traded Fund and issues or redeems shares in creation units of not less than 25,000 shares each, exclude any fees charged for the purchase and redemption of the Fund's creation units. "Redemption Fee" includes a fee charged for any redemption of the Fund's shares, but does not include a deferred sales charge (load) imposed upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph b -Subsection instructions falsefalseRedemption FeefalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_RedemptionFeeOverRedemptiontruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3truetruetrue0.01000.0100falsefalsefalsetruefalseOthernanafalsefalseRedemption Fee5falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member7false0vanguard_RedemptionFeeParentheticalvanguardfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than one year)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than one year)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.No authoritative reference available.falsefalseRedemption Fee ParentheticalfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0vanguard_RedemptionFeeParentheticaltruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00(on shares held less than one year)(on shares held less than one year)falsefalsefalsetruefalse2falsefalsefalse00(on shares held less than one year)(on shares held less than one year)falsefalsefalsetruefalse3falsefalsefalse00falsefalsefalsefalsefalseOthernanafalsefalseRedemption Fee Parenthetical35Shareholder Fees (Vanguard Selected Value Fund Participant) Vanguard Selected Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*Columndei_DocumentInformationDocumentAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ShareholderFeesData.No authoritative reference available.falsefalseShareholder Fees (Fees paid directly from your investment) [Table]231false0rr_OperatingExpensesCaptionrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringAnnual Fund Operating Expenses (ongoing expenses that you pay each year as a percentage of the value of your investment)Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 7 -Subsection table falsefalseOperating Expenses Caption232false0rr_AnnualFundOperatingExpensesTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsehttp://vanguard/role/S000004409OperatingExpensesParticipantfalsefalse1607969 - Schedule - Annual Fund Operating Expenses (Vanguard Selected Value Fund Participant)truefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Selected Value Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member3false0rr_ManagementFeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00440.0044falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureManagement Fees include investment advisory fees (including any fees based on the Fund's performance), any other management fees payable to the investment adviser or its affiliates, and administrative fees payable to the investment adviser or its affiliates that are not included as "Other Expenses."Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph a -Subsection instructions falsefalseManagement FeesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_ManagementFeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00440.0044falsefalsefalsetruefalseOthernanafalsefalseManagement Fees2falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member4false0rr_DistributionAndService12b1FeesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureDistribution [and/or Service] (12b-1) Fees" include all distribution or other expenses incurred during the most recent fiscal year under a plan adopted pursuant to rule 12b-1 [17 CFR 270.12b-1]. Under an appropriate caption or a subcaption of "Other Expenses," disclose the amount of any distribution or similar expenses deducted from the Fund's assets other than pursuant to a rule 12b-1 plan.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 9 -Subsection table falsefalse12b-1 Distribution FeesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_DistributionAndService12b1FeesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue00falsefalsefalsetruefalseOthernanafalsefalse12b-1 Distribution Fees3falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member5false0rr_OtherExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOtherrr:NonNegativePure4Typepure"Other Expenses" include all expenses not otherwise disclosed in the table that are deducted from the Fund's assets or charged to all shareholder accounts. The amount of expenses deducted from the Fund's assets are the amounts shown as expenses in the Fund's statement of operations (including increases resulting from complying with paragraph 2(g) of rule 6-07 of Regulation S-X [17 CFR 210.6-07]). "Other Expenses" do not include extraordinary expenses as determined under generally accepted accounting principles (see Accounting Principles Board Opinion No. 30). If extraordinary expenses were incurred that materially affected the Fund's "Other Expenses," disclose in a footnote to the table what "Other Expenses" would have been had the extraordinary expenses been included.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subparagraph c -Clause i -Subsection instructions falsefalseOther ExpensesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_OtherExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00030.0003falsefalsefalsetruefalseOthernanafalsefalseOther Expenses4falseRowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409Member6false0rr_NetExpensesOverAssetsrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00470.0047falsefalsefalsetruefalseOtherrr:NonNegativePure4TypepureTotal Annual Fund Operating Expenses.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 11 -Subsection table falsefalseTotal Annual Fund Operating ExpensesfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund0rr_NetExpensesOverAssetstruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.00470.0047falsefalsefalsetruefalseOthernanafalsefalseTotal Annual Fund Operating Expenses14Annual Fund Operating Expenses (Vanguard Selected Value Fund Participant) Vanguard Selected Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxis*ColumnunitUnit*RowprimaryElement*Rowdei_LegalEntityAxisAxisvanguard_S000004409MemberfalsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to OperatingExpensesData.No authoritative reference available.falsefalseAnnual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]233false0rr_ExpenseExampleHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Example</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringHeading for Expense Example.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subsection instructions falsefalseEXAMPLE234false0rr_ExpenseExampleNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. It illustrates the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. This example assumes that the Fund provides a return of 5% a year and that operating expenses remain as stated in the preceding table. The results apply whether or not you redeem your investment at the end of the given period. Although your actual costs may be higher or lower, based on these assumptions your costs would be:</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringThe Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 1 -Subparagraph 1 -Subsection example falsefalseExpense Example, Narrative [Text Block]235false0rr_ExpenseExampleNoRedemptionTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member ~ </div> truehttp://vanguard/role/S000004409ExpenseExampleNoRedemptionParticipantfalsefalse1607971 - Schedule - Expense Example, No Redemption {Transposed} (Vanguard Selected Value Fund Participant)truefalsefalse1falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member3false0rr_ExpenseExampleNoRedemptionYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4848falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse1 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$2falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member4false0rr_ExpenseExampleNoRedemptionYear03rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue151151falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 2 -Subparagraph 1 -Subsection example falsefalse3 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$3falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member5false0rr_ExpenseExampleNoRedemptionYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue263263falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse5 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$4falseColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409Member6false0rr_ExpenseExampleNoRedemptionYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue591591falsefalsefalsetruefalseMonetaryrr:NonNegativeMonetaryTypemonetaryYou would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 4 -Subparagraph f -Subsection instructions falsefalse10 YEARfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value FundfalseUSDfalsefalse$1falseRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberVanguard Selected Value Fund - Investor SharesusdStandardhttp://www.xbrl.org/2003/iso4217USDiso421700truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truefalsetrue4848falsefalsefalsetruefalse2truefalsetrue151151falsefalsefalsetruefalse3truefalsetrue263263falsefalsefalsetruefalse4truefalsetrue591591falsefalsefalsetruefalseOthernanafalsefalseVanguard Selected Value Fund - Investor Shares41Expense Example, No Redemption (Vanguard Selected Value Fund Participant) Vanguard Selected Value Fund (USD $)UnKnownUnKnownUnKnownUnKnownfalsetrueColumnprimaryElement*Columndei_LegalEntityAxisAxisvanguard_S000004409MemberRowperiodPeriod*Rowrr_ProspectusShareClassAxisAxis*RowunitUnit*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to ExpenseExampleNoRedemption.No authoritative reference available.falsefalseExpense Example, No Redemption236false0rr_PortfolioTurnoverHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>Portfolio Turnover</p>falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 5 -Subsection instructions falsefalsePortfolio Turnover Heading237false0rr_PortfolioTurnoverTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund pays transaction costs, such as commissions, when it buys and sells securities (or 'turns over' its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the previous expense example, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 22%. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringDisclose the portfolio turnover rate provided in response to Item 14(a) for the most recent fiscal year (or for such shorter period as the Fund has been in operation). Disclose the period for which the information is provided if less than a full fiscal year. A Fund that is a Money Market Fund may omit the portfolio turnover information required by this Item.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 3 -Paragraph 3 -Subsection example falsefalsePortfolio Turnover238false0rr_StrategyHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary Investment StrategiesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategy:239false0rr_StrategyNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The Fund invests mainly in the stocks of medium-size U.S. companies, choosing stocks considered by an advisor to be undervalued. Undervalued stocks are generally those that are out of favor with investors and are trading at prices that the advisor feels are below-average in relation to such measures as earnings and book value. These stocks often have above-average dividend yields. The Fund uses multiple investment advisors. </p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringPrincipal investment strategies of the Fund. Summarize how the Fund intends to achieve its investment objectives by identifying the Fund's principal investment strategies (including the type or types of securities in which the Fund invests or will invest principally) and any policy to concentrate in securities of issuers in a particular industry or group of industries.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Subsection a falsefalseStrategyNarrative240false0rr_RiskHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Primary RisksfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringNarrative Risk Disclosure.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subsection b falsefalseRisk:241false0rr_RiskNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>An investment in the Fund could lose money over short or even long periods. You should expect the Fund's share price and total return to fluctuate within a wide range, like the fluctuations of the overall stock market. The Fund's performance could be hurt by:</p><p>Stock market risk, which is the chance that stock prices overall will decline. Stock markets tend to move in cycles, with periods of rising prices and periods of falling prices.</p><p>Investment style risk, which is the chance that returns from mid-capitalization value stocks will trail returns from the overall stock market. Historically, mid-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Mid-cap stocks tend to have greater volatility than large-cap stocks because, among other things, medium-size companies are more sensitive to changing economic conditions.</p><p>Manager risk, which is the chance that poor security selection or focus on securities in a particular sector, category, or group of companies will cause the Fund to underperform relevant benchmarks or other funds with a similar investment objective. </p><p>Asset concentration risk, which is the chance that the Fund's performance may be adversely affected by the poor performance of relatively few stocks.</p><p>An investment in the Fund is not a deposit of a bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringNarrative Risk Disclosure. A Fund may, in responding to this Item, describe the types of investors for whom the Fund is intended or the types of investment goals that may be consistent with an investment in the Fund.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 1 -Subparagraph i -Clause instruction -Subsection b falsefalseRisk Narrative242false0rr_BarChartAndPerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total ReturnsfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart and Performance Table243false0rr_BarChartNarrativeTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>The following bar chart and table are intended to help you understand the risks of investing in the Fund. The bar chart shows how the performance of the Fund has varied from one calendar year to another over the periods shown. The table shows how the average annual total returns compare with those of a relevant market index, which has investment characteristics similar to those of the Fund. Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447.</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringProvide a brief explanation of how the information illustrates the variability of the Fund's returns (e.g., by stating that the information provides some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5, and 10 years compare with those of a broad measure of market performance). Provide a statement to the effect that the Fund's past performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph i -Subsection b falsefalseBar Chart Narrative244false0rr_BarChartHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Annual Total Returns - Vanguard Selected Value Fund Investor SharesfalsefalsefalsefalsefalseOtherxbrli:stringItemTypestringRisk/Return Bar Chart and Table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subsection b falsefalseBar Chart245false0rr_BarChartTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012167Member ~ </div> falsefalseBarChart9.jpg<div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000012167Member ~ </div> falsehttp://xbrl.sec.gov/rr/role/BarChartDatafalsefalse020050 - Schedule - Annual Total Returnstruefalsefalse1falseColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012167MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*duration2009-11-01T00:00:002010-10-31T00:00:00falsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberVanguard Selected Value Fund - Investor SharesVanguard Selected Value FundusdStandardhttp://www.xbrl.org/2003/iso4217USDiso42170falseUSDfalsefalse$1falseRowprimaryElement*3false0rr_AnnualReturnInceptionDaterrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-11-04falsefalsetruetruefalse2falsetruefalse001997-12-31falsefalsetruetruefalse3falsetruefalse002006-11-16falsefalsetruetruefalse4falsetruefalse002006-11-10falsefalsetruetruefalse5falsetruefalse001996-02-15falsefalsetruetruefalseOtherxbrli:dateItemTypedateIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. Provide annual total returns beginning with the earliest calendar year. Calculate annual returns using the Instructions to Item 8(a), except that the calculations should be based on calendar years. If a Fund's shares are sold subject to a sales load or account fees, state that sales loads or account fees are not reflected in the bar chart and that, if these amounts were reflected, returns would be less than those shown. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets). When a Multiple Class Fund offering one or more Classes offers a new Class in a prospectus that does not offer the shares of any other Class, include the bar chart with annual total returns for any other existing Class for the first year that the Class is offered. Explain in a footnote that the returns are for a Class that is not offered in the prospectus that would have substantially similar annual returns because the shares are invested in the same portfolio of securities and the annual returns would differ only to the extent that the Classes do not have the same expenses. Include return information for the other Class reflected in the bar chart in the performance table.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseAnnual Return Inception Date0rr_AnnualReturnInceptionDatetruefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsetruefalse001996-02-151996-02-15falsefalsetruetruefalseOthernanafalsefalseAnnual Return Inception Date2falseRowprimaryElement*4false0rr_AnnualReturn2001rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.2252-0.2252falsefalsefalsetruefalse2truetruefalse-0.2537-0.2537falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.14990.1499falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20010rr_AnnualReturn2001truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.14990.1499falsefalsefalsetruefalseOthernanafalsefalse20013falseRowprimaryElement*5false0rr_AnnualReturn2002rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.1388-0.1388falsefalsefalsetruefalse2truetruefalse-0.2854-0.2854falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20020rr_AnnualReturn2002truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0979-0.0979falsefalsefalsetruefalseOthernanafalsefalse20024falseRowprimaryElement*6false0rr_AnnualReturn2003rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.57370.5737falsefalsefalsetruefalse2truetruefalse0.42810.4281falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.35210.3521falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20030rr_AnnualReturn2003truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.35210.3521falsefalsefalsetruefalseOthernanafalsefalse20035falseRowprimaryElement*7false0rr_AnnualReturn2004rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.31770.3177falsefalsefalsetruefalse2truetruefalse0.11380.1138falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.20380.2038falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20040rr_AnnualReturn2004truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20380.2038falsefalsefalsetruefalseOthernanafalsefalse20046falseRowprimaryElement*8false0rr_AnnualReturn2005rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.20490.2049falsefalsefalsetruefalse2truetruefalse0.09130.0913falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.10670.1067falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20050rr_AnnualReturn2005truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.10670.1067falsefalsefalsetruefalseOthernanafalsefalse20057falseRowprimaryElement*9false0rr_AnnualReturn2006rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.30340.3034falsefalsefalsetruefalse2truetruefalse0.12720.1272falsefalsefalsetruefalse3falsetruefalse00falsefalsefalsetruefalse4falsetruefalse00falsefalsefalsetruefalse5truetruefalse0.19110.1911falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20060rr_AnnualReturn2006truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.19110.1911falsefalsefalsetruefalseOthernanafalsefalse20068falseRowprimaryElement*10false0rr_AnnualReturn2007rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.05150.0515falsefalsefalsetruefalse2truetruefalse0.14690.1469falsefalsefalsetruefalse3truetruefalse0.01540.0154falsefalsefalsetruefalse4truetruefalse0.01680.0168falsefalsefalsetruefalse5truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20070rr_AnnualReturn2007truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.0023-0.0023falsefalsefalsetruefalseOthernanafalsefalse20079falseRowprimaryElement*11false0rr_AnnualReturn2008rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.4662-0.4662falsefalsefalsetruefalse2truetruefalse-0.3959-0.3959falsefalsefalsetruefalse3truetruefalse-0.3251-0.3251falsefalsefalsetruefalse4truetruefalse-0.3237-0.3237falsefalsefalsetruefalse5truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20080rr_AnnualReturn2008truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse-0.3549-0.3549falsefalsefalsetruefalseOthernanafalsefalse200810falseRowprimaryElement*12false0rr_AnnualReturn2009rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.47120.4712falsefalsefalsetruefalse2truetruefalse0.38420.3842falsefalsefalsetruefalse3truetruefalse0.17520.1752falsefalsefalsetruefalse4truetruefalse0.17630.1763falsefalsefalsetruefalse5truetruefalse0.36260.3626falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit a -Subsection b falsefalse20090rr_AnnualReturn2009truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.36260.3626falsefalsefalsetruefalseOthernanafalsefalse200911falseRowprimaryElement*13false0rr_AnnualReturn2010rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.22550.2255falsefalsefalsetruefalse2truetruefalse0.23830.2383falsefalsefalsetruefalse3truetruefalse0.14020.1402falsefalsefalsetruefalse4truetruefalse0.14170.1417falsefalsefalsetruefalse5truetruefalse0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalse20100rr_AnnualReturn2010truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruefalse0.19440.1944falsefalsefalsetruefalseOthernanafalsefalse2010111Annual Total Returns UnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*Columnrr_ProspectusShareClassAxisAxisvanguard_C000012167MemberColumndei_LegalEntityAxisAxis*ColumnunitUnit*RowprimaryElement*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to BarChartData.No authoritative reference available.falsefalseBar Chart:246false0rr_BarChartClosingTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<p>During the periods shown in the bar chart, the highest return for a calendar quarter was 19.58% (quarter ended September 30, 2009 ), and the lowest return for a quarter was -19.51% (quarter ended December 31, 2008 ).</p>falsefalsefalsefalsefalseOtherus-types:textBlockItemTypestringIf the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph ii -Subsection b falsefalseBar Chart Closing247false0rr_PerformanceTableHeadingrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00Average Annual Total Returns for Periods Ended December 31, 2010falsefalsefalsefalsefalseOtherxbrli:stringItemTypestringThis item represents Average Anuual Total Returns. If a Multiple Class Fund offers a Class in the prospectus that converts into another Class after a stated period, compute average annual total returns in the table by using the returns of the other Class for the period after conversion.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph instructions -Clause 3 -Exhibit c -Subsection b falsefalseBar Chart and Performance Table:248false0rr_PerformanceTableTextBlockrrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00<div style="display:none">~ http://vanguard/role/S000004409PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsefalse<div style="display:none">~ http://vanguard/role/S000004409PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000004409Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> falsehttp://vanguard/role/S000004409PerformanceTableDataParticipantfalsefalse1607981 - Schedule - Average Annual Total Returns (Vanguard Selected Value Fund Participant)truefalsefalse1falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*3false0rr_AverageAnnualReturnYear01rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.24750.2475falsefalsefalsetruefalse2truetruetrue0.19440.1944falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseOne Yearduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$2falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*4false0rr_AverageAnnualReturnYear05rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.04080.0408falsefalsefalsetruefalse2truetruetrue0.04530.0453falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseFive Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$3falseColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*5false0rr_AverageAnnualReturnYear10rrfalsenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.08070.0807falsefalsefalsetruefalse2truetruetrue0.08830.0883falsefalsefalsetruefalseOtherxbrli:pureItemTypepureReturn Before Taxes.Reference 1: 1 -Publisher SEC -Name Form -Number N-1A -Chapter A -Section 4 -Paragraph 2 -Subparagraph iii -Clause 1 -Exhibit 2 -Subsection b falsefalseTen Yearsduration2009-11-01T00:00:002010-10-31T00:00:00falseUSDfalsefalse$1falseRowdei_LegalEntityAxisAxisvanguard_S000004409MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMembertruefalseReturn Before Taxesrr_PerformanceMeasureAxisrr_PerformanceMeasureDomainrr_PerformanceMeasureAxisexplicitMemberVanguard Selected Value FundVanguard Selected Value Fund - Investor SharesReturn Before Taxes0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.19440.1944falsefalsefalsetruefalse2truetruetrue0.04530.0453falsefalsefalsetruefalse3truetruetrue0.08830.0883falsefalsefalsetruefalseOthernanafalsefalseVanguard Selected Value Fund - Investor Shares2falseRowdei_LegalEntityAxisAxisvanguard_S000004409MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalseVanguard Selected Value Funddei_LegalEntityAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_S000004409Memberdei_LegalEntityAxisexplicitMemberfalsefalseVanguard Selected Value Fund - Investor Sharesrr_ProspectusShareClassAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_C000012167Memberrr_ProspectusShareClassAxisexplicitMemberfalsefalseRussell Midcap Value Indexrr_PerformanceMeasureAxisxbrldihttp://xbrl.org/2006/xbrldivanguard_RussellMidcapValueIndexMemberrr_PerformanceMeasureAxisexplicitMemberVanguard Selected Value FundVanguard Selected Value Fund - Investor SharesRussell Midcap Value Index0truefalsefalsefalsefalsefalsefalsefalsefalsefalsefalse1truetruetrue0.24750.2475falsefalsefalsetruefalse2truetruetrue0.04080.0408falsefalsefalsetruefalse3truetruetrue0.08070.0807falsefalsefalsetruefalseOthernanafalsefalseVanguard Selected Value Fund - Investor Shares Russell Midcap Value Index32Average Annual Total Returns (Vanguard Selected Value Fund Participant) Vanguard Selected Value FundUnKnownUnKnownUnKnownUnKnownfalsetrueColumnperiodPeriod*ColumnprimaryElement*ColumnunitUnit*Rowdei_LegalEntityAxisAxisvanguard_S000004409MemberRowrr_ProspectusShareClassAxisAxis*Rowrr_PerformanceMeasureAxisAxis*falsefalsefalseOtherus-types:textBlockItemTypestringContains a command for the SEC Viewer for the role corresponding to PerformanceTableData.No authoritative reference available.falsefalsePerformance1239Risk/Return SummaryUnKnownUnKnownUnKnownUnKnownfalsetrue