XML 20 R2.htm IDEA: XBRL DOCUMENT v3.26.1
Shareholder Report
 6 Months Ended
Mar. 31, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Vanguard Chester Funds
Entity Central Index Key 0000752177
Entity Investment Company Type N-1A
Document Period End Date Mar. 31, 2026
C000007072 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement Income Fund
Class Name Investor Shares
Trading Symbol VTINX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement Income Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [1]
Net Assets $ 35,305,000,000
Holdings Count | Holding 8
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $35,305
Number of Portfolio Holdings 8
Portfolio Turnover Rate 4%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Bond Market II Index Fund Investor Shares 37.1%
Vanguard Total Stock Market Index Fund Institutional Plus Shares 17.7%
Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares 16.6%
Vanguard Total International Bond II Index Fund Institutional Shares 15.5%
Vanguard Total International Stock Index Fund Investor Shares 12.4%
Other Assets and Liabilities—Net 0.7%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000007075 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2025 Fund
Class Name Investor Shares
Trading Symbol VTTVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2025 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [2]
Net Assets $ 73,271,000,000
Holdings Count | Holding 8
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $73,271
Number of Portfolio Holdings 8
Portfolio Turnover Rate 5%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Bond Market II Index Fund Investor Shares 30.1%
Vanguard Total Stock Market Index Fund Institutional Plus Shares 28.5%
Vanguard Total International Stock Index Fund Investor Shares 19.6%
Vanguard Total International Bond II Index Fund Institutional Shares 12.6%
Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares 8.6%
Other Assets and Liabilities—Net 0.6%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000007076 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2035 Fund
Class Name Investor Shares
Trading Symbol VTTHX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2035 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [3]
Net Assets $ 118,627,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $118,627
Number of Portfolio Holdings 7
Portfolio Turnover Rate 3%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 39.2%
Vanguard Total International Stock Index Fund Investor Shares 27.3%
Vanguard Total Bond Market II Index Fund Investor Shares 23.2%
Vanguard Total International Bond II Index Fund Institutional Shares 9.6%
Other Assets and Liabilities—Net 0.7%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000007077 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2045 Fund
Class Name Investor Shares
Trading Symbol VTIVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2045 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [4]
Net Assets $ 108,608,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $108,608
Number of Portfolio Holdings 7
Portfolio Turnover Rate 3%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 47.8%
Vanguard Total International Stock Index Fund Investor Shares 33.2%
Vanguard Total Bond Market II Index Fund Investor Shares 12.9%
Vanguard Total International Bond II Index Fund Institutional Shares 5.4%
Other Assets and Liabilities—Net 0.7%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000034438 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2020 Fund
Class Name Investor Shares
Trading Symbol VTWNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2020 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [5]
Net Assets $ 33,776,000,000
Holdings Count | Holding 8
Investment Company Portfolio Turnover 5.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $33,776
Number of Portfolio Holdings 8
Portfolio Turnover Rate 5%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Bond Market II Index Fund Investor Shares 35.5%
Vanguard Total Stock Market Index Fund Institutional Plus Shares 20.1%
Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares 15.0%
Vanguard Total International Bond II Index Fund Institutional Shares 15.0%
Vanguard Total International Stock Index Fund Investor Shares 13.8%
Other Assets and Liabilities—Net 0.6%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000034439 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2030 Fund
Class Name Investor Shares
Trading Symbol VTHRX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2030 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [6]
Net Assets $ 106,983,000,000
Holdings Count | Holding 8
Investment Company Portfolio Turnover 4.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $106,983
Number of Portfolio Holdings 8
Portfolio Turnover Rate 4%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 34.6%
Vanguard Total Bond Market II Index Fund Investor Shares 28.2%
Vanguard Total International Stock Index Fund Investor Shares 24.3%
Vanguard Total International Bond II Index Fund Institutional Shares 11.8%
Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares 0.4%
Other Assets and Liabilities—Net 0.7%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000034440 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2040 Fund
Class Name Investor Shares
Trading Symbol VFORX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2040 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [7]
Net Assets $ 108,440,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $108,440
Number of Portfolio Holdings 7
Portfolio Turnover Rate 3%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 43.5%
Vanguard Total International Stock Index Fund Investor Shares 30.2%
Vanguard Total Bond Market II Index Fund Investor Shares 18.1%
Vanguard Total International Bond II Index Fund Institutional Shares 7.6%
Other Assets and Liabilities—Net 0.6%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000034441 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2050 Fund
Class Name Investor Shares
Trading Symbol VFIFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2050 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [8]
Net Assets $ 95,820,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 3.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $95,820
Number of Portfolio Holdings 7
Portfolio Turnover Rate 3%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 52.3%
Vanguard Total International Stock Index Fund Investor Shares 36.6%
Vanguard Total Bond Market II Index Fund Investor Shares 7.4%
Vanguard Total International Bond II Index Fund Institutional Shares 3.1%
Other Assets and Liabilities—Net 0.6%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000091317 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2055 Fund
Class Name Investor Shares
Trading Symbol VFFVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2055 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [9]
Net Assets $ 67,316,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $67,316
Number of Portfolio Holdings 7
Portfolio Turnover Rate 2%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 52.6%
Vanguard Total International Stock Index Fund Investor Shares 37.1%
Vanguard Total Bond Market II Index Fund Investor Shares 6.8%
Vanguard Total International Bond II Index Fund Institutional Shares 2.9%
Other Assets and Liabilities—Net 0.6%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000108861 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2060 Fund
Class Name Investor Shares
Trading Symbol VTTSX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2060 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [10]
Net Assets $ 40,773,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $40,773
Number of Portfolio Holdings 7
Portfolio Turnover Rate 2%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 52.6%
Vanguard Total International Stock Index Fund Investor Shares 37.1%
Vanguard Total Bond Market II Index Fund Investor Shares 6.8%
Vanguard Total International Bond II Index Fund Institutional Shares 2.9%
Other Assets and Liabilities—Net 0.6%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000180147 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2065 Fund
Class Name Investor Shares
Trading Symbol VLXVX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2065 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [11]
Net Assets $ 14,455,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 2.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $14,455
Number of Portfolio Holdings 7
Portfolio Turnover Rate 2%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 52.5%
Vanguard Total International Stock Index Fund Investor Shares 37.1%
Vanguard Total Bond Market II Index Fund Investor Shares 6.8%
Vanguard Total International Bond II Index Fund Institutional Shares 2.9%
Other Assets and Liabilities—Net 0.7%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000234832 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Target Retirement 2070 Fund
Class Name Investor Shares
Trading Symbol VSVNX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Target Retirement 2070 Fund (the "Fund") for the period of October 1, 2025, to March 31, 2026.
Shareholder Report Annual or Semi-Annual semi-annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature. You can also request this information by contacting us at 800-662-7447.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last six months?
(based on a hypothetical $10,000 investment)
Share Class Name Costs of a $10,000 investment Costs paid as a percentage of a $10,000 investment
Investor Shares $4 0.08%1
​1
Annualized.
Expenses Paid, Amount $ 4
Expense Ratio, Percent 0.08% [12]
Net Assets $ 2,856,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 1.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of March 31, 2026)
Fund Net Assets
(in millions)		 $2,856
Number of Portfolio Holdings 7
Portfolio Turnover Rate 1%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of March 31, 2026)
Vanguard Total Stock Market Index Fund Institutional Plus Shares 52.4%
Vanguard Total International Stock Index Fund Investor Shares 37.1%
Vanguard Total Bond Market II Index Fund Investor Shares 6.8%
Vanguard Total International Bond II Index Fund Institutional Shares 2.9%
Other Assets and Liabilities—Net 0.8%
This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities.
Material Fund Change [Text Block]
How has the Fund changed?
Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Summary of Change Legend [Text Block]
This is a summary of certain changes to the Fund since September 30, 2025. For more complete information, you may review the Fund’s prospectus at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
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