XML 10 R2.htm IDEA: XBRL DOCUMENT v3.25.0.1
Label Element Value
Risk Return Abstract rr_RiskReturnAbstract  
Registrant Name dei_EntityRegistrantName VANGUARD CHESTER FUNDS
Prospectus Date rr_ProspectusDate Jan. 31, 2024
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock Vanguard PRIMECAP FundSupplement to the Prospectus and Summary ProspectusAs approved by the Fund’s Board of Trustees, Vanguard PRIMECAP Fund (the Fund) has reduced its expense ratios. 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 PRIMECAP FundAnnual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)Investor SharesAdmiral SharesManagement Fees0.360.28%12b-1 Distribution FeeNoneNoneOther Expenses0.010.01%Total Annual Fund Operating Expenses0.370.29%1The expense information shown in the table has been restated 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$38$119$208$468Admiral Shares$30$93$163$368© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PS 059A 022025
Retail | Vanguard PRIMECAP Fund  
Risk Return Abstract rr_RiskReturnAbstract  
Supplement to Prospectus [Text Block] rr_SupplementToProspectusTextBlock Vanguard PRIMECAP FundSupplement to the Prospectus and Summary ProspectusAs approved by the Fund’s Board of Trustees, Vanguard PRIMECAP Fund (the Fund) has reduced its expense ratios. 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 PRIMECAP FundAnnual Fund Operating Expenses
(Expenses that you pay each year as a percentage of the value of your investment)Investor SharesAdmiral SharesManagement Fees0.360.28%12b-1 Distribution FeeNoneNoneOther Expenses0.010.01%Total Annual Fund Operating Expenses0.370.29%1The expense information shown in the table has been restated 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$38$119$208$468Admiral Shares$30$93$163$368© 2025 The Vanguard Group, Inc. All rights reserved.Vanguard Marketing Corporation, Distributor.PS 059A 022025
Operating Expenses Caption [Text] rr_OperatingExpensesCaption <span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Prospectus and Summary Prospectus Text Changes for Vanguard PRIMECAP Fund</span><span style="color:#000000;font-family:Arial;font-size:8.5pt;font-weight:bold;">Annual Fund Operating Expenses</span> <br/><span style="color:#000000;font-family:Arial;font-size:8.5pt;">(Expenses that you pay each year as a percentage of the value of your investment)</span>
Expense Example [Heading] rr_ExpenseExampleHeading <span style="color:#000000;font-family:Arial;font-size:9.5pt;">Examples</span>
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:
Retail | Vanguard PRIMECAP Fund | Investor Shares  
Risk Return Abstract rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.36%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.37% [1]
1 Year rr_ExpenseExampleYear01 $ 38
3 Years rr_ExpenseExampleYear03 119
5 Years rr_ExpenseExampleYear05 208
10 Years rr_ExpenseExampleYear10 $ 468
Retail | Vanguard PRIMECAP Fund | Admiral Shares  
Risk Return Abstract rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.28%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.01%
Total Annual Fund Operating Expenses rr_ExpensesOverAssets 0.29% [1]
1 Year rr_ExpenseExampleYear01 $ 30
3 Years rr_ExpenseExampleYear03 93
5 Years rr_ExpenseExampleYear05 163
10 Years rr_ExpenseExampleYear10 $ 368
[1] The expense information shown in the table has been restated to reflect current fees.