Shareholder Fees (Fees paid directly from your investment) Shareholder Fees (Fees paid directly from your investment) Shareholder Fees (Fees paid directly from your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Average Annual Total Returns for Periods Ended December 31, 2012 Average Annual Total Returns for Periods Ended December 31, 2012 Average Annual Total Returns for Periods Ended December 31, 2012 Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.09 2013-01-25 (reflects no deduction for fees, expenses, or taxes) Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.09 2013-01-25 (reflects no deduction for fees, expenses, or taxes) Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.09 2013-01-25 (reflects no deduction for fees, expenses, or taxes) <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 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 at800-662-7447.</p> <p>Example</p> <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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <p>Portfolio Turnover</p> <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 more 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 9%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</p><p>Investment style risk, which is the chance that returns from small- and mid-capitalization growth will trail returns from the overall stock market. Small-, mid-, and large-cap stocks each tend to go through cycles of doing better-or worse-than other segments of the stock market or the stock market in general. These periods have, in the past, lasted for as long as several years. Historically, small- and mid-cap stocks have been more volatile in price than large-cap stocks. Small and mid-size companies tend to have greater stock volatility because, among other things, these companies are more sensitive to changing economic conditions.</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>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.Significant investments in health care and information technology sectors subject the Fund to proportionately higher exposure to risks of these sectors.</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> <p>The Fund invests mainly in U.S. stocks, with an emphasis on companies that are considered to have prospects for rapid earnings growth. The Fund does not focus on companies of any particular size. The Fund's investment advisor uses fundamental research to identify stocks that are expected to outperform the market over a three- to five-year time horizon and that are available at attractive prices relative to their fundamental values.</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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.</p> <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 Admiral 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 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 at800-662-7447.</p> <p>Example</p> <p>The following example is intended to help you compare the cost of investing in the Fund's Admiral 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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold Admiral Shares of the Fund.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <p>Portfolio Turnover</p> <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 more 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 9%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</p><p>Investment style risk, which is the chance that returns from small- and mid-capitalization growth will trail returns from the overall stock market. Small-, mid-, and large-cap stocks each tend to go through cycles of doing better-or worse-than other segments of the stock market or the stock market in general. These periods have, in the past, lasted for as long as several years. Historically, small- and mid-cap stocks have been more volatile in price than large-cap stocks. Small and mid-size companies tend to have greater stock volatility because, among other things, these companies are more sensitive to changing economic conditions.</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>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.Significant investments in health care and information technology sectors subject the Fund to proportionately higher exposure to risks of these sectors.</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> <p>The Fund invests mainly in U.S. stocks, with an emphasis on companies that are considered to have prospects for rapid earnings growth. The Fund does not focus on companies of any particular size. The Fund's investment advisor uses fundamental research to identify stocks that are expected to outperform the market over a three- to five-year time horizon and that are available at attractive prices relative to their fundamental values.</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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.</p> <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 share classes presented 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 at800-662-7447.</p> <p>Examples</p> <p>The following examples are intended to help you compare the cost of investing in the Fund's Investor Shares or Admiral Shares with the cost of investing in other mutual funds. They illustrate the hypothetical expenses that you would incur over various periods if you invest $10,000 in the Fund's shares. These examples assume that the Shares provide a return of 5% a year and that total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold Investor Shares or Admiral Shares of the Fund.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <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 shown only for the Investor Shares and may differ for each share class. 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> <p>Portfolio Turnover</p> <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 more 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 examples, reduce the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 9%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</p><p>Investment style risk, which is the chance that returns from small- and mid-capitalization growth will trail returns from the overall stock market. Small-, mid-, and large-cap stocks each tend to go through cycles of doing better-or worse-than other segments of the stock market or the stock market in general. These periods have, in the past, lasted for as long as several years. Historically, small- and mid-cap stocks have been more volatile in price than large-cap stocks. Small and mid-size companies tend to have greater stock volatility because, among other things, these companies are more sensitive to changing economic conditions.</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>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.Significant investments in the health care and information technology sectors subject the Fund to proportionately higher exposure to the risks of these sectors.</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> <p>The Fund invests mainly in U.S. stocks, with an emphasis on companies that are considered to have prospects for rapid earnings growth. The Fund does not focus on companies of any particular size. The Fund's investment advisor uses fundamental research to identify stocks that are expected to outperform the market over a three- to five-year time horizon and that are available at attractive prices relative to their fundamental values.</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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. </p> <p>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.</p> <p>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. </p> <p> Please note that after-tax returns are shown only for the Investor Shares and may differ for each share class. </p> <p>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> <div style="display:none">~ http://vanguard/role/S000002594ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594ShareholderFeesParticipant2 column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594PerformanceTableDataParticipant2 column primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000002594PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000002594PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000002594OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594OperatingExpensesParticipant2 column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002594ExpenseExampleNoRedemptionParticipant2 column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002594Member ~ </div> Shareholder Fees (Fees paid directly from your investment) Shareholder Fees (Fees paid directly from your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Average Annual Total Returns for Periods Ended December 31, 2012 Average Annual Total Returns for Periods Ended December 31, 2012 Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.67 2013-01-25 (reflect no deduction for fees or expenses) Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.67 2013-01-25 (reflects no deduction for fees or expenses) <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 invstment 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 at800-662-7447.</p> <p>Example</p> <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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <p>Portfolio Turnover</p> <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 more 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 67%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</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 the types of stocks in which the Fund invests will trail returns from global stock markets. small- and mid-cap stocks each tend to go through cycles of doing better-or worse-than other segments of the stock market or the global stock market in general. These periods have, in the past, lasted for as long as several years. Historically, small- and mid-cap stocks have been more volatile in price than large-cap stocks. Small and mid-size companies tend to have greater stock volatility because, among other things, these companies are more sensitive to changing economic conditions.</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, its 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>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>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> <p>The Fund invests primarily in U.S. and foreign equity securities chosen mainly on the basis of bottom-up stock analysis. The Fund typically invests across a wide range of industries, and its holdings are expected to represent a mix of value and growth stocks, as well as a mix of developed and emerging markets stocks, across the capitalization spectrum. Under normal circumstances, at least 80% of the Fund's assets will be invested in equity securities. The Fund uses multiple investment advisors. </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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>, which have investment characteristics similar to those of the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. </p> <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> <p>Example</p> <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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <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> <p>Portfolio Turnover</p> <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 more 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 67%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</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 the types of stocks in which the Fund invests will trail returns from global stock markets. small- and mid-cap stocks each tend to go through cycles of doing better-or worse-than other segments of the stock market or the global stock market in general. These periods have, in the past, lasted for as long as several years. Historically, small- and mid-cap stocks have been more volatile in price than large-cap stocks. Small and mid-size companies tend to have greater stock volatility because, among other things, these companies are more sensitive to changing economic conditions.</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, its 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>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>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> <p>The Fund invests primarily in U.S. and foreign equity securities chosen mainly on the basis of bottom-up stock analysis. The Fund typically invests across a wide range of industries, and its holdings are expected to represent a mix of value and growth stocks, as well as a mix of developed and emerging markets stocks, across the capitalization spectrum. Under normal circumstances, at least 80% of the Fund's assets will be invested in equity securities. The Fund uses multiple investment advisors. </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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>, which have investment characteristics similar to those of the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. </p> <p>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.</p> <p>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.</p> <p>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> <div style="display:none">~ http://vanguard/role/S000002595ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002595ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002595PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000002595PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000002595OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002595OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002595ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002595ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002595Member ~ </div> Shareholder Fees (Fees paid directly from your investment) Shareholder Fees (Fees paid directly from your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Average Annual Total Returns for Periods Ended December 31, 2012 Average Annual Total Returns for Periods Ended December 31, 2012 Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.67 2013-01-25 (reflect no deduction for fees or expenses) Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.67 2013-01-25 (reflect no deduction for fees, expenses, or taxes) <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 and other comparative indexes, which have 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 at800-662-7447.</p> <p>Example</p> <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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <p>Portfolio Turnover</p> <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 more 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 67%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</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 small- and mid-capitalization stocks will trail returns from the overall stock market. Historically, these stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Small and mid-size companies tend to have greater stock volatility because, among other things, these 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> <p>The Fund invests in small- and mid-capitalization domestic equity securities based on the advisor's assessment of the relative return potential of the securities. The advisor selects securities that it believes offer a good balance between reasonable valuations and attractive growth prospects relative to their industry peers. The advisor does this by using quantitative models to evaluate all of the securities in its benchmark, the MSCI US Small + Mid Cap 2200 Index, while maintaining a risk profile similar to that of the Index. Under normal circumstances, at least 80% of the Fund's assets will be invested in equity securities.</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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>, which have investment characteristics similar to those of the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.</p> <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 and other comparative indexes, which have 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> <p>Example</p> <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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold Investor Shares of the Fund.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <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> <p>Portfolio Turnover</p> <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 more 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 67%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</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 small- and mid-capitalization stocks will trail returns from the overall stock market. Historically, these stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently. Small and mid-size companies tend to have greater stock volatility because, among other things, these 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> <p>The Fund invests in small- and mid-capitalization domestic equity securities based on the advisor's assessment of the relative return potential of the securities. The advisor selects securities that it believes offer a good balance between reasonable valuations and attractive growth prospects relative to their industry peers. The advisor does this by using quantitative models to evaluate all of the securities in its benchmark, the MSCI US Small + Mid Cap 2200 Index, while maintaining a risk profile similar to that of the Index. Under normal circumstances, at least 80% of the Fund's assets will be invested in equity securities.</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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>, which have investment characteristics similar to those of the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. </p> <p>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.</p> <p>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.</p> <p>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> <div style="display:none">~ http://vanguard/role/S000002593ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002593ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002593PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000002593PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000002593OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002593OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002593ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member ~ </div> <div style="display:none">~ http://vanguard/role/S000002593ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000002593Member ~ </div> Shareholder Fees (Fees paid directly from your investment) Shareholder Fees (Fees paid directly from your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment) Average Annual Total Returns for Periods Ended December 31, 2012 Average Annual Total Returns for Periods Ended December 31, 2012 Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.66 2013-01-25 (reflects no deduction for fees or expenses) Annual Total Returns Fees and Expenses Investment Objective Primary Risks Risk/Return Primary Investment Strategies 0.66 2013-01-25 (reflects no deduction for fees, expenses, or taxes) <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 at800-662-7447.</p> <p>Example</p> <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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. 'Acquired Fund Fees and Expenses' are expenses incurred indirectly by the Fund through its ownership of shares in other investment companies, such as business development companies. Business development company expenses are similar to the expenses paid by any operating company held by the Fund. They are not direct costs paid by Fund shareholders and are not used to calculate the Fund's net asset value. They have no impact on the costs associated with fund operations.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <p>Portfolio Turnover</p> <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 more 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 66%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</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 small-capitalization stocks will trail returns from the overall stock market. Historically, small-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently.Small companies tend to have greater stock volatility because, among other things, these 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.Significant investment in the financials sector subjects the Fund to proportionately higher exposure to the risks of this sector.</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> <p>The Fund invests in small-capitalization domestic equity securities based on the advisor's assessment of the relative return potential of the securities. The advisor selects securities that it believes offer a good balance between reasonable valuations and attractive growth prospects relative to their industry peers. The advisor does this by using quantitative models to evaluate all of the securities in the Fund's benchmark, the MSCI US Small Cap 1750 Index, while maintaining a risk profile similar to that of the Index. Under normal circumstances, at least 80% of the Fund's assets will be invested in small-cap equity securities.</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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future.</p> <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> <p>Example</p> <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 total annual fund 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>The following table describes the fees and expenses you may pay if you buy and hold shares of the Fund. 'Acquired Fund Fees and Expenses' are expenses incurred indirectly by the Fund through its ownership of shares in other investment companies, such as business development companies. Business development company expenses are similar to the expenses paid by any operating company held by the Fund. They are not direct costs paid by Fund shareholders and are not used to calculate the Fund's net asset value. They have no impact on the costs associated with fund operations.</p> <p>The Fund seeks to provide long-term capital appreciation.</p> <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> <p>Portfolio Turnover</p> <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 more 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 66%. </p> <p>An investment in the Fund could lose money over short or even long periods. </p> <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 is subject to the following risks, which could affect the Fund's performance:</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 small-capitalization stocks will trail returns from the overall stock market. Historically, small-cap stocks have been more volatile in price than the large-cap stocks that dominate the overall market, and they often perform quite differently.Small companies tend to have greater stock volatility because, among other things, these 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.Significant investment in the financials sector subjects the Fund to proportionately higher exposure to the risks of this sector.</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> <p>The Fund invests in small-capitalization domestic equity securities based on the advisor's assessment of the relative return potential of the securities. The advisor selects securities that it believes offer a good balance between reasonable valuations and attractive growth prospects relative to their industry peers. The advisor does this by using quantitative models to evaluate all of the securities in the Fund's benchmark, the MSCI US Small Cap 1750 Index, while maintaining a risk profile similar to that of the Index. Under normal circumstances, at least 80% of the Fund's assets will be invested in small-cap equity securities.</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> <p>The following bar chart and table are intended to help you understand the risks of investing in the Fund.</p> <p>800-662-7447</p> <p>vanguard.com/performance </p> <p>Keep in mind that the Fund's past performance (before and after taxes) does not indicate how the Fund will perform in the future. </p> <p>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.</p> <p>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.</p> <p>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> <div style="display:none">~ http://vanguard/role/S000012432ShareholderFeesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member ~ </div> <div style="display:none">~ http://vanguard/role/S000012432ShareholderFeesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member ~ </div> <div style="display:none">~ http://vanguard/role/S000012432PerformanceTableDataParticipant column primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000012432PerformanceTableDataRetail column primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * ~ </div> <div style="display:none">~ http://vanguard/role/S000012432OperatingExpensesRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member ~ </div> <div style="display:none">~ http://vanguard/role/S000012432OperatingExpensesParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member ~ </div> <div style="display:none">~ http://vanguard/role/S000012432ExpenseExampleNoRedemptionRetail column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member ~ </div> <div style="display:none">~ http://vanguard/role/S000012432ExpenseExampleNoRedemptionParticipant column period compact * column rr_ProspectusShareClassAxis compact * row primary compact * row dei_LegalEntityAxis compact vanguard_S000012432Member ~ </div> 0.1837 -0.0618 0.1106 0.4891 -0.3908 0.1058 0.1678 0.0827 0.2165 0.4955 1995-08-14 0.2325 -0.2374 2003-06-30 2008-12-31 <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000007113Member ~ </div> Annual Total Returns - Vanguard Capital Opportunity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 23.25% (quarter ended June 30, 2003 ), and the lowest return for a quarter was -23.74% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2003 ) (quarter ended December 31, 2008 ) <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000007113Member ~ </div> Annual Total Returns - Vanguard Capital Opportunity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 23.25% (quarter ended June 30, 2003 ), and the lowest return for a quarter was -23.74% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2003 ) (quarter ended December 31, 2008 ) 1995-08-14 0.1837 0.0227 0.1102 0.1770 0.0167 0.1043 0.1283 0.0180 0.0976 0.0000 0.0000 20. 0 0 49. 154. 269. 604. 0.0046 0 0.0002 0.0048 0.1890 0.0117 0.2138 0.3206 -0.4151 -0.0184 0.1343 0.0997 0.2049 0.4383 1995-08-14 0.1945 -0.2708 2009-06-30 2008-12-31 <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000007112Member ~ </div> Annual Total Returns - Vanguard Strategic Equity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 19.45% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -27.08% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2009 ) (quarter ended December 31, 2008 ) <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000007112Member ~ </div> Annual Total Returns - Vanguard Strategic Equity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 19.45% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -27.08% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2009 ) (quarter ended December 31, 2008 ) 1995-08-14 0.1890 0.0243 0.0912 Comparative Indexes 0.1861 0.0220 0.0841 0.1267 0.0202 0.0791 0.0000 0.0000 20. 0 0 30. 93. 163. 368. 0.0027 0 0.0002 0.0029 0.1952 -0.0890 0.1604 0.3298 -0.4666 0.1167 0.2359 0.1177 0.2009 0.4451 1995-08-14 0.2281 -0.2400 2009-06-30 2008-12-31 <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000007115Member ~ </div> Annual Total Returns - Vanguard Global Equity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 22.81% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -24.00% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2009 ) (quarter ended December 31, 2008 ) <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000007115Member ~ </div> Annual Total Returns - Vanguard Global Equity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 22.81% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -24.00% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2009 ) (quarter ended December 31, 2008 ) 1995-08-14 0.1952 -0.0217 0.0915 Comparative Indexes 0.1914 -0.0256 0.0849 0.1306 -0.0192 0.0795 0.0000 0.0000 20. 0 0 60. 189. 329. 738. 0.0054 0 0.0005 The expense information shown in the table has been restated to reflect estimated amounts for the current fiscal year. The expense information shown in the table has been restated to reflect estimated amounts for the current fiscal year. 0.0059 0.1730 0.0080 0.2724 0.2411 -0.3613 -0.0428 2006-04-24 0.1982 -0.2562 2009-06-30 2008-12-31 <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000033747Member ~ </div> Annual Total Returns - Vanguard Strategic Small-Cap Equity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 19.82% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -25.62% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2009 ) (quarter ended December 31, 2008 ) <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000033747Member ~ </div> Annual Total Returns - Vanguard Strategic Small-Cap Equity Fund Investor Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 19.82% (quarter ended June 30, 2009 ), and the lowest return for a quarter was -25.62% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2009 ) (quarter ended December 31, 2008 ) 2006-04-24 0.1730 0.0359 0.0254 0.1701 0.0340 0.0233 0.1162 0.0304 0.0213 0.0000 0.0000 20. 0 0 41. 128. 224. 505. 0.0034 0 0.0004 0.0002 Acquired Fund Fees and Expenses are not included in the Fund's financial statements, which provide a clearer picture of a fund's actual operating costs. 0.0040 0.1843 -0.0611 0.1112 0.4903 -0.3900 0.1065 0.1688 0.0835 0.2178 0.4969 2001-11-12 0.2327 -0.2370 2003-06-30 2008-12-31 <div style="display:none">~ http://xbrl.sec.gov/rr/role/BarChartData column rr_ProspectusShareClassAxis compact vanguard_C000007114Member ~ </div> Annual Total Returns - Vanguard Capital Opportunity Fund Admiral Shares <p>During the periods shown in the bar chart, the highest return for a calendar quarter was 23.27% (quarter ended June 30, 2003 ), and the lowest return for a quarter was -23.70% (quarter ended December 31, 2008 ).</p> (quarter ended June 30, 2003 ) (quarter ended December 31, 2008 ) 2001-11-12 0.1843 0.0235 0.1111 0.0000 0.0000 20. 0 0 42. 132. 230. 518. 0.0039 0 0.0002 0.0041 0.1707 0.0355 0.1041 0.1691 0.0393 0.1066 0.1691 0.0393 0.1064 0.1581 0.0323 0.1032 0.1581 0.0323 0.1032 0.1613 -0.0116 0.0811 0.1613 -0.0116 0.0832 0.1820 0.0500 0.0436 0000932471 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member vanguard:ParticipantMember 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member vanguard:ParticipantMember 2011-10-01 2012-09-30 0000932471 vanguard:S000002595Member vanguard:ParticipantMember 2011-10-01 2012-09-30 0000932471 vanguard:S000012432Member vanguard:ParticipantMember 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member vanguard:Participant2Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member vanguard:RetailMember 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member vanguard:RetailMember 2011-10-01 2012-09-30 0000932471 vanguard:S000002595Member vanguard:RetailMember 2011-10-01 2012-09-30 0000932471 vanguard:S000012432Member vanguard:RetailMember 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member vanguard:C000007113Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member vanguard:C000007112Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002595Member vanguard:C000007115Member 2011-10-01 2012-09-30 0000932471 vanguard:S000012432Member vanguard:C000033747Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member vanguard:C000007114Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member rr:AfterTaxesOnDistributionsMember vanguard:C000007113Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member rr:AfterTaxesOnDistributionsMember vanguard:C000007112Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002595Member rr:AfterTaxesOnDistributionsMember vanguard:C000007115Member 2011-10-01 2012-09-30 0000932471 vanguard:S000012432Member rr:AfterTaxesOnDistributionsMember vanguard:C000033747Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member rr:AfterTaxesOnDistributionsAndSalesMember vanguard:C000007113Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member rr:AfterTaxesOnDistributionsAndSalesMember vanguard:C000007112Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002595Member rr:AfterTaxesOnDistributionsAndSalesMember vanguard:C000007115Member 2011-10-01 2012-09-30 0000932471 vanguard:S000012432Member rr:AfterTaxesOnDistributionsAndSalesMember vanguard:C000033747Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member vanguard:Russell2800IndexMember vanguard:C000007112Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member vanguard:MSCIUSSmallMidCap2200IndexMember vanguard:C000007112Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002593Member vanguard:SplicedSmallandMidCapIndexMember vanguard:C000007112Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member vanguard:RussellMidcapGrowthIndexMember vanguard:C000007113Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002594Member vanguard:RussellMidcapGrowthIndexMember vanguard:C000007114Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002595Member vanguard:MSCIACWIIndexMember vanguard:C000007115Member 2011-10-01 2012-09-30 0000932471 vanguard:S000002595Member vanguard:SplicedGlobalEquityIndexMember vanguard:C000007115Member 2011-10-01 2012-09-30 0000932471 vanguard:S000012432Member vanguard:MSCIUSSmallCap1750IndexMember vanguard:C000033747Member 2011-10-01 2012-09-30 iso4217:USD xbrli:pure 2013-01-25 2013-01-25 2012-09-30 485BPOS Vanguard Horizon Funds 0000932471 false <div style="display: none">~ http://xbrl.sec.gov/rr/role/RiskReturnDetailData column period compact * row dei_DocumentInformationDocumentAxis compact * row dei_LegalEntityAxis compact * row rr_ProspectusShareClassAxis compact * row rr_PerformanceMeasureAxis compact * row primary compact * ~ </div>