dei_EntityRegistrantName

VANGUARD HORIZON FUNDS

rr_SupplementToProspectusTextBlock

Vanguard Strategic Small-Cap Equity FundSupplement to the Prospectus and Summary ProspectusAs approved by the Fund’s Board of Trustees, Vanguard Strategic Small-Cap Equity Fund (the Fund) has reduced its expense ratio. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for the Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Strategic Small-Cap Equity FundAnnual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.2012b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.211The expense information shown in the table has been restated to reflect current fees.ExampleThe 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 were to invest $10,000 in the Fund’s shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to 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:1 Year3 Years5 Years10 Years$22$68$118$268© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PS 615A 022025Vanguard Capital Opportunity FundSupplement to the Prospectus and Summary ProspectusAs approved by the Fund’s Board of Trustees, Vanguard Capital Opportunity Fund (the Fund) has reduced its expense ratio for Admiral Shares. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses examples for the Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Capital Opportunity FundAnnual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)Investor SharesAdmiral SharesManagement Fees0.420.34%12b-1 Distribution FeeNoneNoneOther Expenses0.010.01%Total Annual Fund Operating Expenses0.430.35%1The expense information shown in the table has been restated for Admiral Shares to reflect current fees.ExamplesThe 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 were to invest $10,000 in the Fund’s shares. These examples assume that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to 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:1 Year3 Years5 Years10 YearsInvestor Shares$44$138$241$542Admiral Shares$36$113$197$443© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PS 111A 022025Vanguard Global Equity FundSupplement to the Prospectus and Summary ProspectusAs approved by the Fund’s Board of Trustees, Vanguard Global Equity Fund (the Fund) has reduced its expense ratio. Effective February 3, 2025, the Annual Fund Operating Expenses table and the hypothetical expenses example for the Fund are hereby deleted and replaced with the following:Prospectus and Summary Prospectus Text Changes for Vanguard Global Equity FundAnnual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)Management Fees0.3812b-1 Distribution FeeNoneOther Expenses0.01Total Annual Fund Operating Expenses0.391The expense information shown in the table has been restated to reflect current fees.ExampleThe 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 were to invest $10,000 in the Fund’s shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to 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:1 Year3 Years5 Years10 Years$40$125$219$493© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PS 129A 022025

Risk Return Abstract

rr_RiskReturnAbstract

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Prospectus and Summary Prospectus Text Changes for Vanguard Strategic Small-Cap Equity FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

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 were to invest $10,000 in the Fund’s shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to 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:

Risk Return Abstract

rr_RiskReturnAbstract

12b-1 Distribution Fee

rr_DistributionAndService12b1FeesOverAssets

none

3 Years

rr_ExpenseExampleYear03

68

10 Years

rr_ExpenseExampleYear10

$ 268

Risk Return Abstract

rr_RiskReturnAbstract

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Prospectus and Summary Prospectus Text Changes for Vanguard Global Equity FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

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 were to invest $10,000 in the Fund’s shares. This example assumes that the Fund provides a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to 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:

Risk Return Abstract

rr_RiskReturnAbstract

12b-1 Distribution Fee

rr_DistributionAndService12b1FeesOverAssets

none

3 Years

rr_ExpenseExampleYear03

125

10 Years

rr_ExpenseExampleYear10

$ 493

Risk Return Abstract

rr_RiskReturnAbstract

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Prospectus and Summary Prospectus Text Changes for Vanguard Capital Opportunity FundAnnual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

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 were to invest $10,000 in the Fund’s shares. These examples assume that the shares provide a return of 5% each year and that total annual fund operating expenses remain as stated in the preceding table. You would incur these hypothetical expenses whether or not you were to 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:

Risk Return Abstract

rr_RiskReturnAbstract

12b-1 Distribution Fee

rr_DistributionAndService12b1FeesOverAssets

none