| Form N-CSR Cover | 12 Months Ended |
| Sep. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Vanguard Chester Funds |
| Entity Central Index Key | 0000752177 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| Shareholder Report | 12 Months Ended |
| Sep. 30, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Vanguard Chester Funds |
| Entity Central Index Key | 0000752177 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Sep. 30, 2024 |
| 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 annual shareholder report contains important information about Vanguard Target Retirement Income Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement Income Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank, the Bank of England, and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund uses an asset allocation strategy designed for investors currently in retirement. It seeks to provide current income and some growth of capital. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 7.46% for Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 16.22% 4.45% 4.51% Target Retirement Income Composite Index 16.34% 4.75% 4.74% Bloomberg U.S. Aggregate Bond Index 11.57% 0.33% 1.84% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 36,539,000,000 |
| Holdings Count | Holding | 8 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 4% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 8 Portfolio Turnover Rate 4 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Bond Market II Index Fund Investor Shares 36.5 % Vanguard Total Stock Market Index Fund Institutional Plus Shares 17.9 % Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares 16.7 % Vanguard Total International Bond II Index Fund Institutional Shares 15.9 % Vanguard Total International Stock Index Fund Investor Shares 12.3 % Other Assets and Liabilities—Net 0.7 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2025 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement 2025 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 7.46% for Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 21.13% 7.09% 6.74% Target Retirement 2025 Composite Index 21.26% 7.55% 7.06% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 78,755,000,000 |
| Holdings Count | Holding | 8 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 7% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 8 Portfolio Turnover Rate 7 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 31.0 % Vanguard Total Bond Market II Index Fund Investor Shares 28.7 % Vanguard Total International Stock Index Fund Investor Shares 20.8 % Vanguard Total International Bond II Index Fund Institutional Shares 12.4 % Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares 6.5 % Other Assets and Liabilities—Net 0.6 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2035 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement 2035 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 24.76% 8.95% 7.93% Target Retirement 2035 Composite Index 24.96% 9.41% 8.26% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 104,179,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 4% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 4 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 41.4 % Vanguard Total International Stock Index Fund Investor Shares 27.6 % Vanguard Total Bond Market II Index Fund Investor Shares 21.3 % Vanguard Total International Bond II Index Fund Institutional Shares 9.1 % Other Assets and Liabilities—Net 0.6 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2045 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed roughly in line with its benchmark, the Target Retirement 2045 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 27.82% 10.74% 8.97% Target Retirement 2045 Composite Index 28.08% 11.18% 9.32% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 91,013,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 1 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 50.3 % Vanguard Total International Stock Index Fund Investor Shares 33.2 % Vanguard Total Bond Market II Index Fund Investor Shares 10.9 % Vanguard Total International Bond II Index Fund Institutional Shares 4.8 % Other Assets and Liabilities—Net 0.8 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2020 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement 2020 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 7.46% for Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 18.25% 6.01% 5.99% Target Retirement 2020 Composite Index 18.34% 6.37% 6.27% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 37,873,000,000 |
| Holdings Count | Holding | 8 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 4% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 8 Portfolio Turnover Rate 4 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Bond Market II Index Fund Investor Shares 33.6 % Vanguard Total Stock Market Index Fund Institutional Plus Shares 22.7 % Vanguard Total International Stock Index Fund Investor Shares 15.4 % Vanguard Total International Bond II Index Fund Institutional Shares 14.7 % Vanguard Short-Term Inflation-Protected Securities Index Fund Admiral Shares 12.9 % Other Assets and Liabilities—Net 0.7 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2030 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed roughly in line with its benchmark, the Target Retirement 2030 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 23.27% 8.04% 7.35% Target Retirement 2030 Composite Index 23.41% 8.50% 7.68% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 99,058,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 7% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 7 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 36.7 % Vanguard Total Bond Market II Index Fund Investor Shares 26.6 % Vanguard Total International Stock Index Fund Investor Shares 24.8 % Vanguard Total International Bond II Index Fund Institutional Shares 11.3 % Other Assets and Liabilities—Net 0.6 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2040 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed roughly in line with its benchmark, the Target Retirement 2040 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 26.33% 9.85% 8.49% Target Retirement 2040 Composite Index 26.51% 10.30% 8.83% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 93,115,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 2 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 46.3 % Vanguard Total International Stock Index Fund Investor Shares 30.2 % Vanguard Total Bond Market II Index Fund Investor Shares 16.0 % Vanguard Total International Bond II Index Fund Institutional Shares 6.9 % Other Assets and Liabilities—Net 0.6 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2050 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed roughly in line with its benchmark, the Target Retirement 2050 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 28.91% 11.05% 9.13% Target Retirement 2050 Composite Index 29.26% 11.52% 9.49% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 77,441,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 1 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 53.5 % Vanguard Total International Stock Index Fund Investor Shares 36.2 % Vanguard Total Bond Market II Index Fund Investor Shares 6.6 % Vanguard Total International Bond II Index Fund Institutional Shares 3.0 % Other Assets and Liabilities—Net 0.7 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2055 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement 2055 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 28.92% 11.05% 9.11% Target Retirement 2055 Composite Index 29.26% 11.52% 9.49% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 52,016,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 1 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 53.5 % Vanguard Total International Stock Index Fund Investor Shares 36.1 % Vanguard Total Bond Market II Index Fund Investor Shares 6.7 % Vanguard Total International Bond II Index Fund Institutional Shares 3.0 % Other Assets and Liabilities—Net 0.7 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2060 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement 2060 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform over the past 10 years? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: September 30, 2014, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 28.93% 11.05% 9.11% Target Retirement 2060 Composite Index 29.26% 11.52% 9.49% MSCI US Broad Market Index 35.26% 15.40% 12.91% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.87% |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 29,576,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 1 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 53.4 % Vanguard Total International Stock Index Fund Investor Shares 36.2 % Vanguard Total Bond Market II Index Fund Investor Shares 6.6 % Vanguard Total International Bond II Index Fund Institutional Shares 3.0 % Other Assets and Liabilities—Net 0.8 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2065 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement 2065 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: July 12, 2017, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception Investor Shares 28.95% 11.04% 9.82 % Target Retirement 2065 Composite Index 29.26% 11.52% 10.22% MSCI US Broad Market Index 35.26% 15.40% 13.96% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 0.36% 1.57% |
| Performance Inception Date | Jul. 12, 2017 |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 8,843,000,000 |
| Holdings Count | Holding | 7 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 0% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 7 Portfolio Turnover Rate 0 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments, derivatives and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 53.2 % Vanguard Total International Stock Index Fund Investor Shares 36.3 % Vanguard Total Bond Market II Index Fund Investor Shares 6.6 % Vanguard Total International Bond II Index Fund Institutional Shares 3.0 % Other Assets and Liabilities—Net 0.9 % |
| 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 annual shareholder report contains important information about Vanguard Target Retirement 2070 Fund (the "Fund") for the period of October 1, 2023 |
| Shareholder Report Annual or Semi-Annual | 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. |
| 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 year? (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 $ 0.08 % |
| Expenses Paid, Amount | $ 9 |
| Expense Ratio, Percent | 0.08% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended September 30, 2024, the Fund performed in line with its benchmark, the Target Retirement 2070 Composite Index. Global economic growth appeared relatively stable at around 3% during the period. With inflation moderating across much of the world, major central banks including the European Central Bank and the U.S. Federal Reserve began lowering policy rates. Stock and bond prices rose worldwide. The Fund automatically adjusts its asset mix over time, providing broad diversification while incrementally decreasing exposure to stocks and increasing exposure to bonds. The Fund continues to adjust for approximately seven years after its target date until its allocations match those of Vanguard Target Retirement Income Fund. As a fund of funds, the Fund’s performance reflects the weighted average of its holdings’ total returns, which ranged from 10.35% for Vanguard Total International Bond II Index Fund Institutional Shares to 35.27% for Vanguard Total Stock Market Index Fund Institutional Plus Shares. |
| Performance Past Does Not Indicate Future [Text] | Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. |
| Line Graph [Table Text Block] | How did the Fund perform since inception? Keep in mind that the Fund's past performance does not indicate how the Fund will perform in the future. Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. Cumulative Performance: June 28, 2022, Through September 30, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year Since Inception Investor Shares 28.98% 16.56 % Target Retirement 2070 Composite Index 29.26% 16.78% MSCI US Broad Market Index 35.26% 21.14% Bloomberg U.S. Aggregate Float Adjusted Index 11.47% 3.52% |
| Performance Inception Date | Jun. 28, 2022 |
| No Deduction of Taxes [Text Block] | The graph and returns shown do not reflect taxes that a shareholder would pay on fund distributions or on the sale of fund shares. |
| Updated Performance Information Location [Text Block] | Updated performance information is available on our website at vanguard.com/performance or by calling Vanguard toll-free at 800-662-7447. |
| Net Assets | $ 1,036,000,000 |
| Holdings Count | Holding | 5 |
| Advisory Fees Paid, Amount | $ 0 |
| Investment Company Portfolio Turnover | 1% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 5 Portfolio Turnover Rate 1 % Total Investment Advisory Fees $ |
| Holdings [Text Block] | This table reflects the Fund’s investments, including short-term investments and other assets and liabilities. Portfolio Composition % of Net Assets Vanguard Total Stock Market Index Fund Institutional Plus Shares 54.1 % Vanguard Total International Stock Index Fund Investor Shares 35.8 % Vanguard Total Bond Market II Index Fund Investor Shares 7.0 % Vanguard Total International Bond II Index Fund Institutional Shares 3.0 % Other Assets and Liabilities—Net 0.1 % |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | 27 Months Ended | 60 Months Ended | 87 Months Ended | 120 Months Ended | ||||||||||||
| Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022 | Jun. 28, 2022 | Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2017 | Jul. 12, 2017 | Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2014 | |
| C000007072 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 15,545 | $ 15,545 | $ 15,545 | $ 15,545 | $ 15,545 | $ 13,375 | $ 12,498 | $ 14,565 | $ 13,426 | $ 12,506 | $ 11,715 | $ 11,340 | $ 10,773 | $ 10,018 | $ 10,000 | ||
| Average Annual Return, Percent | 16.22% | 4.45% | 4.51% | ||||||||||||||
| C000007075 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 19,202.03378 | 19,202.03378 | $ 19,202.03378 | 19,202.03378 | $ 19,202.03378 | 15,852.45814 | 14,209.48251 | 17,229.24696 | 14,862.13545 | 13,630.59872 | 12,994.73089 | 12,168.54676 | 10,889.60334 | 9,839.842941 | 10,000 | ||
| Average Annual Return, Percent | 21.13% | 7.09% | 6.74% | ||||||||||||||
| C000007076 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 21,453 | 21,453 | $ 21,453 | 21,453 | $ 21,453 | 17,195 | 15,003 | 18,493 | 15,333 | 13,976 | 13,520 | 12,460 | 10,857 | 9,725 | 10,000 | ||
| Average Annual Return, Percent | 24.76% | 8.95% | 7.93% | ||||||||||||||
| C000007077 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 23,612 | 23,612 | $ 23,612 | 23,612 | $ 23,612 | 18,473 | 15,699 | 19,607 | 15,634 | 14,178 | 13,892 | 12,647 | 10,824 | 9,651 | 10,000 | ||
| Average Annual Return, Percent | 27.82% | 10.74% | 8.97% | ||||||||||||||
| C000034438 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 17,887 | 17,887 | $ 17,887 | 17,887 | $ 17,887 | 15,127 | 13,833 | 16,435 | 14,497 | 13,360 | 12,690 | 11,986 | 10,880 | 9,887 | 10,000 | ||
| Average Annual Return, Percent | 18.25% | 6.01% | 5.99% | ||||||||||||||
| C000034439 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 20,329 | 20,329 | $ 20,329 | 20,329 | $ 20,329 | 16,492 | 14,576 | 17,867 | 15,104 | 13,809 | 13,259 | 12,316 | 10,875 | 9,784 | 10,000 | ||
| Average Annual Return, Percent | 23.27% | 8.04% | 7.35% | ||||||||||||||
| C000034440 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 22,593 | 22,593 | $ 22,593 | 22,593 | $ 22,593 | 17,884 | 15,397 | 19,107 | 15,534 | 14,127 | 13,765 | 12,586 | 10,826 | 9,657 | 10,000 | ||
| Average Annual Return, Percent | 26.33% | 9.85% | 8.49% | ||||||||||||||
| C000034441 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 23,953 | 23,953 | $ 23,953 | 23,953 | $ 23,953 | 18,581 | 15,683 | 19,648 | 15,637 | 14,182 | 13,895 | 12,649 | 10,827 | 9,654 | 10,000 | ||
| Average Annual Return, Percent | 28.91% | 11.05% | 9.13% | ||||||||||||||
| C000091317 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 23,914 | 23,914 | $ 23,914 | 23,914 | $ 23,914 | 18,549 | 15,656 | 19,611 | 15,612 | 14,160 | 13,870 | 12,634 | 10,811 | 9,642 | 10,000 | ||
| Average Annual Return, Percent | 28.92% | 11.05% | 9.11% | ||||||||||||||
| C000108861 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 23,907 | 23,907 | $ 23,907 | 23,907 | $ 23,907 | 18,542 | 15,649 | 19,601 | 15,606 | 14,155 | 13,868 | 12,628 | 10,809 | 9,639 | 10,000 | ||
| Average Annual Return, Percent | 28.93% | 11.05% | 9.11% | ||||||||||||||
| C000180147 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 19,660 | 19,660 | $ 19,660 | $ 19,660 | $ 19,660 | 15,246 | 12,869 | 16,106 | 12,825 | 11,647 | 11,408 | 10,395 | $ 10,000 | ||||
| Average Annual Return, Percent | 28.95% | 11.04% | 9.82% | ||||||||||||||
| C000234832 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 14,136 | $ 14,136 | $ 14,136 | $ 14,136 | 14,136 | 10,960 | 9,250 | $ 10,000 | |||||||||
| Average Annual Return, Percent | 28.98% | 16.56% | |||||||||||||||
| Target Retirement Income Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement Income Composite Index | ||||||||||||||||
| Account Value | $ 15,891 | $ 15,891 | $ 15,891 | 15,891 | $ 15,891 | 13,659 | 12,728 | 14,805 | 13,619 | 12,602 | 11,797 | 11,401 | 10,813 | 10,031 | 10,000 | ||
| Average Annual Return, Percent | 16.34% | 4.75% | 4.74% | ||||||||||||||
| Bloomberg U S Aggregate Bond Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Bond Index | ||||||||||||||||
| Account Value | $ 12,004 | 12,004 | $ 12,004 | 12,004 | $ 12,004 | 10,760 | 10,691 | 12,518 | 12,632 | 11,807 | 10,705 | 10,836 | 10,829 | 10,294 | 10,000 | ||
| Average Annual Return, Percent | 11.57% | 0.33% | 1.84% | ||||||||||||||
| Target Retirement 2025 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2025 Composite Index | ||||||||||||||||
| Account Value | $ 19,786.92163 | 19,786.92163 | $ 19,786.92163 | 19,786.92163 | $ 19,786.92163 | 16,317.5141 | 14,581.29407 | 17,586.36132 | 15,116.50782 | 13,752.39766 | 13,094.63386 | 12,229.28123 | 10,922.32105 | 9,838.988864 | 10,000 | ||
| Average Annual Return, Percent | 21.26% | 7.55% | 7.06% | ||||||||||||||
| MSCI US Broad Market Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | MSCI US Broad Market Index | ||||||||||||||||
| Account Value | $ 33,680 | $ 33,680 | $ 33,680 | $ 33,680 | $ 33,680 | 24,899 | 20,634 | 10,000 | 25,063 | 18,923 | 16,456 | 15,990 | 13,594 | 10,000 | 11,456 | 9,959 | 10,000 |
| Average Annual Return, Percent | 35.26% | 21.14% | 15.40% | 13.96% | 12.91% | ||||||||||||
| Target Retirement 2035 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2035 Composite Index | ||||||||||||||||
| Account Value | $ 22,117 | $ 22,117 | $ 22,117 | $ 22,117 | $ 22,117 | 17,700 | 15,392 | 18,882 | 15,594 | 14,110 | 13,624 | 12,522 | 10,895 | 9,726 | 10,000 | ||
| Average Annual Return, Percent | 24.96% | 9.41% | 8.26% | ||||||||||||||
| Bloomberg U S Aggregate Float Adjusted Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Bloomberg U.S. Aggregate Float Adjusted Index | ||||||||||||||||
| Account Value | $ 12,038 | $ 12,038 | $ 12,038 | $ 12,038 | $ 12,038 | 10,799 | 10,716 | 10,000 | 12,549 | 12,666 | 11,822 | 10,705 | 10,839 | 10,000 | 10,833 | 10,283 | 10,000 |
| Average Annual Return, Percent | 11.47% | 3.52% | 0.36% | 1.57% | 1.87% | ||||||||||||
| Target Retirement 2045 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2045 Composite Index | ||||||||||||||||
| Account Value | $ 24,379 | $ 24,379 | $ 24,379 | $ 24,379 | $ 24,379 | 19,035 | 16,135 | 20,055 | 15,919 | 14,349 | 14,023 | 12,731 | 10,880 | 9,663 | 10,000 | ||
| Average Annual Return, Percent | 28.08% | 11.18% | 9.32% | ||||||||||||||
| Target Retirement 2020 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2020 Composite Index | ||||||||||||||||
| Account Value | $ 18,365 | 18,365 | $ 18,365 | 18,365 | $ 18,365 | 15,519 | 14,150 | 16,752 | 14,740 | 13,484 | 12,788 | 12,051 | 10,924 | 9,894 | 10,000 | ||
| Average Annual Return, Percent | 18.34% | 6.37% | 6.27% | ||||||||||||||
| Target Retirement 2030 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2030 Composite Index | ||||||||||||||||
| Account Value | $ 20,953 | 20,953 | $ 20,953 | 20,953 | $ 20,953 | 16,978 | 14,958 | 18,233 | 15,361 | 13,933 | 13,359 | 12,377 | 10,910 | 9,783 | 10,000 | ||
| Average Annual Return, Percent | 23.41% | 8.50% | 7.68% | ||||||||||||||
| Target Retirement 2040 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2040 Composite Index | ||||||||||||||||
| Account Value | $ 23,314 | 23,314 | $ 23,314 | 23,314 | $ 23,314 | 18,428 | 15,821 | 19,534 | 15,815 | 14,283 | 13,889 | 12,666 | 10,877 | 9,667 | 10,000 | ||
| Average Annual Return, Percent | 26.51% | 10.30% | 8.83% | ||||||||||||||
| Target Retirement 2050 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2050 Composite Index | ||||||||||||||||
| Account Value | $ 24,749 | 24,749 | $ 24,749 | 24,749 | $ 24,749 | 19,147 | 16,125 | 20,108 | 15,923 | 14,349 | 14,023 | 12,731 | 10,880 | 9,663 | 10,000 | ||
| Average Annual Return, Percent | 29.26% | 11.52% | 9.49% | ||||||||||||||
| Target Retirement 2055 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2055 Composite Index | ||||||||||||||||
| Account Value | $ 24,749 | 24,749 | $ 24,749 | 24,749 | $ 24,749 | 19,147 | 16,125 | 20,108 | 15,923 | 14,349 | 14,023 | 12,731 | 10,880 | 9,663 | 10,000 | ||
| Average Annual Return, Percent | 29.26% | 11.52% | 9.49% | ||||||||||||||
| Target Retirement 2060 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2060 Composite Index | ||||||||||||||||
| Account Value | $ 24,749 | 24,749 | $ 24,749 | 24,749 | $ 24,749 | 19,147 | 16,125 | 20,108 | 15,923 | 14,349 | 14,023 | 12,731 | $ 10,880 | $ 9,663 | $ 10,000 | ||
| Average Annual Return, Percent | 29.26% | 11.52% | 9.49% | ||||||||||||||
| Target Retirement 2065 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2065 Composite Index | ||||||||||||||||
| Account Value | $ 20,187 | 20,187 | $ 20,187 | $ 20,187 | $ 20,187 | 15,617 | 13,153 | $ 16,402 | $ 12,988 | $ 11,704 | $ 11,439 | $ 10,384 | $ 10,000 | ||||
| Average Annual Return, Percent | 29.26% | 11.52% | 10.22% | ||||||||||||||
| Target Retirement 2070 Composite Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Target Retirement 2070 Composite Index | ||||||||||||||||
| Account Value | $ 14,195 | $ 14,195 | $ 14,195 | $ 14,195 | $ 14,195 | $ 10,982 | $ 9,249 | $ 10,000 | |||||||||
| Average Annual Return, Percent | 29.26% | 16.78% |
| Shareholder Report, Holdings (Details) | Sep. 30, 2024 |
| C000007072 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.50% |
| C000007072 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000007072 [Member] | Vanguard Short Term Inflation Protected Securities Index Fund Admiral Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.70% |
| C000007072 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.90% |
| C000007072 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.30% |
| C000007072 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000007075 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 28.70% |
| C000007075 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 31% |
| C000007075 [Member] | Vanguard Short Term Inflation Protected Securities Index Fund Admiral Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.50% |
| C000007075 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.40% |
| C000007075 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.80% |
| C000007075 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000007076 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000007076 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 41.40% |
| C000007076 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.10% |
| C000007076 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 27.60% |
| C000007076 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000007077 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.90% |
| C000007077 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 50.30% |
| C000007077 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.80% |
| C000007077 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.20% |
| C000007077 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000034438 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 33.60% |
| C000034438 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.70% |
| C000034438 [Member] | Vanguard Short Term Inflation Protected Securities Index Fund Admiral Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.90% |
| C000034438 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.70% |
| C000034438 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.40% |
| C000034438 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000034439 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 26.60% |
| C000034439 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.70% |
| C000034439 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000034439 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 24.80% |
| C000034439 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000034440 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16% |
| C000034440 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 46.30% |
| C000034440 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.90% |
| C000034440 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 30.20% |
| C000034440 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.60% |
| C000034441 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000034441 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.50% |
| C000034441 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000034441 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.20% |
| C000034441 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000091317 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.70% |
| C000091317 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.50% |
| C000091317 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000091317 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.10% |
| C000091317 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.70% |
| C000108861 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000108861 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.40% |
| C000108861 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000108861 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.20% |
| C000108861 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.80% |
| C000180147 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.60% |
| C000180147 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 53.20% |
| C000180147 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000180147 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 36.30% |
| C000180147 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000234832 [Member] | Vanguard Total Bond Market II Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7% |
| C000234832 [Member] | Vanguard Total Stock Market Index Fund Institutional Plus Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 54.10% |
| C000234832 [Member] | Vanguard Total International Bond II Index Fund Institutional Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000234832 [Member] | Vanguard Total International Stock Index Fund Investor Shares [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35.80% |
| C000234832 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
