| Form N-CSR Cover | 12 Months Ended |
| Dec. 31, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Vanguard Index Funds |
| Entity Central Index Key | 0000036405 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| Shareholder Report | 12 Months Ended |
| Dec. 31, 2024 USD ($) Holding | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSR |
| Amendment Flag | false |
| Registrant Name | Vanguard Index Funds |
| Entity Central Index Key | 0000036405 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Dec. 31, 2024 |
| C000007779 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Extended Market Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | VEXMX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Extended Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 $ 0.19 % |
| Expenses Paid, Amount | $ 21 |
| Expense Ratio, Percent | 0.19% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Each of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Financials, information technology, and industrials contributed most to the benchmark’s return. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 16.76% 9.75% 9.31% S&P Completion Index 16.88% 9.77% 9.33% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 111,156,000,000 |
| Holdings Count | Holding | 3,485 |
| Advisory Fees Paid, Amount | $ 1,799,000 |
| Investment Company Portfolio Turnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,485 Portfolio Turnover Rate 11 % 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 Communication Services 4.3 % Consumer Discretionary 12.0 % Consumer Staples 3.0 % Energy 4.1 % Financials 18.0 % Health Care 11.4 % Industrials 17.4 % Information Technology 17.9 % Materials 4.7 % Real Estate 5.4 % Utilities 1.7 % Other Assets and Liabilities—Net 0.1 % |
| C000007782 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Extended Market Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VXF |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Extended Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 ETF Shares $ 0.06 % |
| Expenses Paid, Amount | $ 7 |
| Expense Ratio, Percent | 0.06% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Each of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Financials, information technology, and industrials contributed most to the benchmark’s return. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 16.90% 9.89% 9.45% ETF Shares Market Price 16.89% 9.90% 9.46% S&P Completion Index 16.88% 9.77% 9.33% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 111,156,000,000 |
| Holdings Count | Holding | 3,485 |
| Advisory Fees Paid, Amount | $ 1,799,000 |
| Investment Company Portfolio Turnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,485 Portfolio Turnover Rate 11 % 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 Communication Services 4.3 % Consumer Discretionary 12.0 % Consumer Staples 3.0 % Energy 4.1 % Financials 18.0 % Health Care 11.4 % Industrials 17.4 % Information Technology 17.9 % Materials 4.7 % Real Estate 5.4 % Utilities 1.7 % Other Assets and Liabilities—Net 0.1 % |
| Material Fund Change [Text Block] | How has the Fund changed? Subsequent to the Fund's fiscal year end, the expense ratio for the ETF Share class was reduced. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Expenses [Text Block] | Subsequent to the Fund's fiscal year end, the expense ratio for the ETF Share class was reduced. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000007780 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Extended Market Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VEXAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Extended Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 Admiral Shares $ 0.06 % |
| Expenses Paid, Amount | $ 7 |
| Expense Ratio, Percent | 0.06% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Each of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Financials, information technology, and industrials contributed most to the benchmark’s return. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 16.91% 9.89% 9.45% S&P Completion Index 16.88% 9.77% 9.33% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 111,156,000,000 |
| Holdings Count | Holding | 3,485 |
| Advisory Fees Paid, Amount | $ 1,799,000 |
| Investment Company Portfolio Turnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,485 Portfolio Turnover Rate 11 % 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 Communication Services 4.3 % Consumer Discretionary 12.0 % Consumer Staples 3.0 % Energy 4.1 % Financials 18.0 % Health Care 11.4 % Industrials 17.4 % Information Technology 17.9 % Materials 4.7 % Real Estate 5.4 % Utilities 1.7 % Other Assets and Liabilities—Net 0.1 % |
| Material Fund Change [Text Block] | How has the Fund changed? Subsequent to the Fund's fiscal year end, the expense ratio for the Admiral Share class was reduced. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Expenses [Text Block] | Subsequent to the Fund's fiscal year end, the expense ratio for the Admiral Share class was reduced. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000007781 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Extended Market Index Fund |
| Class Name | Institutional Shares |
| Trading Symbol | VIEIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Extended Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Shares $ 0.05 % |
| Expenses Paid, Amount | $ 5 |
| Expense Ratio, Percent | 0.05% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Each of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Financials, information technology, and industrials contributed most to the benchmark’s return. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $5,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Shares 16.91% 9.90% 9.47% S&P Completion Index 16.88% 9.77% 9.33% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 111,156,000,000 |
| Holdings Count | Holding | 3,485 |
| Advisory Fees Paid, Amount | $ 1,799,000 |
| Investment Company Portfolio Turnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,485 Portfolio Turnover Rate 11 % 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 Communication Services 4.3 % Consumer Discretionary 12.0 % Consumer Staples 3.0 % Energy 4.1 % Financials 18.0 % Health Care 11.4 % Industrials 17.4 % Information Technology 17.9 % Materials 4.7 % Real Estate 5.4 % Utilities 1.7 % Other Assets and Liabilities—Net 0.1 % |
| C000096110 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Extended Market Index Fund |
| Class Name | Institutional Plus Shares |
| Trading Symbol | VEMPX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Extended Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Plus Shares $ 0.04 % |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.04% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Each of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Financials, information technology, and industrials contributed most to the benchmark’s return. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $100,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Plus Shares 16.94% 9.91% 9.48% S&P Completion Index 16.88% 9.77% 9.33% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 111,156,000,000 |
| Holdings Count | Holding | 3,485 |
| Advisory Fees Paid, Amount | $ 1,799,000 |
| Investment Company Portfolio Turnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,485 Portfolio Turnover Rate 11 % 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 Communication Services 4.3 % Consumer Discretionary 12.0 % Consumer Staples 3.0 % Energy 4.1 % Financials 18.0 % Health Care 11.4 % Industrials 17.4 % Information Technology 17.9 % Materials 4.7 % Real Estate 5.4 % Utilities 1.7 % Other Assets and Liabilities—Net 0.1 % |
| C000170275 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Extended Market Index Fund |
| Class Name | Institutional Select Shares |
| Trading Symbol | VSEMX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Extended Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Select Shares $ 0.02 % |
| Expenses Paid, Amount | $ 2 |
| Expense Ratio, Percent | 0.02% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Each of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Financials, information technology, and industrials contributed most to the benchmark’s return. |
| 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 27, 2016, Through December 31, 2024 Initial Investment of $3,000,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception Institutional Select Shares 16.96% 9.94% 12.09 % S&P Completion Index 16.88% 9.77% 11.91% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 14.95% |
| Performance Inception Date | Jun. 27, 2016 |
| 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 | $ 111,156,000,000 |
| Holdings Count | Holding | 3,485 |
| Advisory Fees Paid, Amount | $ 1,799,000 |
| Investment Company Portfolio Turnover | 11% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,485 Portfolio Turnover Rate 11 % 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 Communication Services 4.3 % Consumer Discretionary 12.0 % Consumer Staples 3.0 % Energy 4.1 % Financials 18.0 % Health Care 11.4 % Industrials 17.4 % Information Technology 17.9 % Materials 4.7 % Real Estate 5.4 % Utilities 1.7 % Other Assets and Liabilities—Net 0.1 % |
| C000007791 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | VIMSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 $ 0.17 % |
| Expenses Paid, Amount | $ 18 |
| Expense Ratio, Percent | 0.17% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Industrials and financials contributed most to the benchmark’s total return. Other notable contributors included technology, utility, and consumer discretionary companies. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 15.09% 9.72% 9.42% CRSP US Mid Cap Index 15.25% 9.86% 9.57% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 176,987,000,000 |
| Holdings Count | Holding | 327 |
| Advisory Fees Paid, Amount | $ 2,958,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 327 Portfolio Turnover Rate 16 % 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 Basic Materials 2.6 % Consumer Discretionary 13.1 % Consumer Staples 5.9 % Energy 5.5 % Financials 13.5 % Health Care 8.6 % Industrials 19.9 % Real Estate 7.6 % Technology 13.9 % Telecommunications 0.9 % Utilities 8.2 % Other Assets and Liabilities—Net 0.3 % |
| C000007794 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VO |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 ETF Shares $ 0.04 % |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.04% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Industrials and financials contributed most to the benchmark’s total return. Other notable contributors included technology, utility, and consumer discretionary companies. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 15.23% 9.85% 9.56% ETF Shares Market Price 15.28% 9.87% 9.56% CRSP US Mid Cap Index 15.25% 9.86% 9.57% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 176,987,000,000 |
| Holdings Count | Holding | 327 |
| Advisory Fees Paid, Amount | $ 2,958,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 327 Portfolio Turnover Rate 16 % 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 Basic Materials 2.6 % Consumer Discretionary 13.1 % Consumer Staples 5.9 % Energy 5.5 % Financials 13.5 % Health Care 8.6 % Industrials 19.9 % Real Estate 7.6 % Technology 13.9 % Telecommunications 0.9 % Utilities 8.2 % Other Assets and Liabilities—Net 0.3 % |
| C000007792 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VIMAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Admiral Shares $ 0.05 % |
| Expenses Paid, Amount | $ 5 |
| Expense Ratio, Percent | 0.05% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Industrials and financials contributed most to the benchmark’s total return. Other notable contributors included technology, utility, and consumer discretionary companies. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 15.22% 9.85% 9.55% CRSP US Mid Cap Index 15.25% 9.86% 9.57% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 176,987,000,000 |
| Holdings Count | Holding | 327 |
| Advisory Fees Paid, Amount | $ 2,958,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 327 Portfolio Turnover Rate 16 % 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 Basic Materials 2.6 % Consumer Discretionary 13.1 % Consumer Staples 5.9 % Energy 5.5 % Financials 13.5 % Health Care 8.6 % Industrials 19.9 % Real Estate 7.6 % Technology 13.9 % Telecommunications 0.9 % Utilities 8.2 % Other Assets and Liabilities—Net 0.3 % |
| C000007793 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Index Fund |
| Class Name | Institutional Shares |
| Trading Symbol | VMCIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Shares $ 0.04 % |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.04% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Industrials and financials contributed most to the benchmark’s total return. Other notable contributors included technology, utility, and consumer discretionary companies. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $5,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Shares 15.23% 9.86% 9.56% CRSP US Mid Cap Index 15.25% 9.86% 9.57% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 176,987,000,000 |
| Holdings Count | Holding | 327 |
| Advisory Fees Paid, Amount | $ 2,958,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 327 Portfolio Turnover Rate 16 % 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 Basic Materials 2.6 % Consumer Discretionary 13.1 % Consumer Staples 5.9 % Energy 5.5 % Financials 13.5 % Health Care 8.6 % Industrials 19.9 % Real Estate 7.6 % Technology 13.9 % Telecommunications 0.9 % Utilities 8.2 % Other Assets and Liabilities—Net 0.3 % |
| C000096111 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Index Fund |
| Class Name | Institutional Plus Shares |
| Trading Symbol | VMCPX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Plus Shares $ 0.03 % |
| Expenses Paid, Amount | $ 3 |
| Expense Ratio, Percent | 0.03% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Industrials and financials contributed most to the benchmark’s total return. Other notable contributors included technology, utility, and consumer discretionary companies. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $100,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Plus Shares 15.25% 9.87% 9.57% CRSP US Mid Cap Index 15.25% 9.86% 9.57% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 176,987,000,000 |
| Holdings Count | Holding | 327 |
| Advisory Fees Paid, Amount | $ 2,958,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 327 Portfolio Turnover Rate 16 % 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 Basic Materials 2.6 % Consumer Discretionary 13.1 % Consumer Staples 5.9 % Energy 5.5 % Financials 13.5 % Health Care 8.6 % Industrials 19.9 % Real Estate 7.6 % Technology 13.9 % Telecommunications 0.9 % Utilities 8.2 % Other Assets and Liabilities—Net 0.3 % |
| C000007795 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | NAESX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 $ 0.17 % |
| Expenses Paid, Amount | $ 18 |
| Expense Ratio, Percent | 0.17% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Industrial, financial, and technology stocks contributed the most to the benchmark’s return. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 14.10% 9.17% 8.96% CRSP US Small Cap Index 14.22% 9.26% 9.06% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 155,233,000,000 |
| Holdings Count | Holding | 1,377 |
| Advisory Fees Paid, Amount | $ 2,566,000 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,377 Portfolio Turnover Rate 13 % 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 Basic Materials 3.5 % Consumer Discretionary 16.0 % Consumer Staples 3.6 % Energy 4.5 % Financials 14.6 % Health Care 10.5 % Industrials 21.7 % Real Estate 7.1 % Technology 13.4 % Telecommunications 1.6 % Utilities 3.3 % Other Assets and Liabilities—Net 0.2 % |
| C000007798 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VB |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 ETF Shares $ 0.05 % |
| Expenses Paid, Amount | $ 5 |
| Expense Ratio, Percent | 0.05% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Industrial, financial, and technology stocks contributed the most to the benchmark’s return. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 14.23% 9.30% 9.09% ETF Shares Market Price 14.13% 9.29% 9.09% CRSP US Small Cap Index 14.22% 9.26% 9.06% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 155,233,000,000 |
| Holdings Count | Holding | 1,377 |
| Advisory Fees Paid, Amount | $ 2,566,000 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,377 Portfolio Turnover Rate 13 % 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 Basic Materials 3.5 % Consumer Discretionary 16.0 % Consumer Staples 3.6 % Energy 4.5 % Financials 14.6 % Health Care 10.5 % Industrials 21.7 % Real Estate 7.1 % Technology 13.4 % Telecommunications 1.6 % Utilities 3.3 % Other Assets and Liabilities—Net 0.2 % |
| C000007796 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VSMAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Admiral Shares $ 0.05 % |
| Expenses Paid, Amount | $ 5 |
| Expense Ratio, Percent | 0.05% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Industrial, financial, and technology stocks contributed the most to the benchmark’s return. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 14.23% 9.30% 9.09% CRSP US Small Cap Index 14.22% 9.26% 9.06% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 155,233,000,000 |
| Holdings Count | Holding | 1,377 |
| Advisory Fees Paid, Amount | $ 2,566,000 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,377 Portfolio Turnover Rate 13 % 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 Basic Materials 3.5 % Consumer Discretionary 16.0 % Consumer Staples 3.6 % Energy 4.5 % Financials 14.6 % Health Care 10.5 % Industrials 21.7 % Real Estate 7.1 % Technology 13.4 % Telecommunications 1.6 % Utilities 3.3 % Other Assets and Liabilities—Net 0.2 % |
| C000007797 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Index Fund |
| Class Name | Institutional Shares |
| Trading Symbol | VSCIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Shares $ 0.04 % |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.04% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Industrial, financial, and technology stocks contributed the most to the benchmark’s return. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $5,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Shares 14.23% 9.31% 9.10% CRSP US Small Cap Index 14.22% 9.26% 9.06% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 155,233,000,000 |
| Holdings Count | Holding | 1,377 |
| Advisory Fees Paid, Amount | $ 2,566,000 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,377 Portfolio Turnover Rate 13 % 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 Basic Materials 3.5 % Consumer Discretionary 16.0 % Consumer Staples 3.6 % Energy 4.5 % Financials 14.6 % Health Care 10.5 % Industrials 21.7 % Real Estate 7.1 % Technology 13.4 % Telecommunications 1.6 % Utilities 3.3 % Other Assets and Liabilities—Net 0.2 % |
| C000096112 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Index Fund |
| Class Name | Institutional Plus Shares |
| Trading Symbol | VSCPX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Plus Shares $ 0.03 % |
| Expenses Paid, Amount | $ 3 |
| Expense Ratio, Percent | 0.03% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Industrial, financial, and technology stocks contributed the most to the benchmark’s return. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $100,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Plus Shares 14.25% 9.32% 9.11% CRSP US Small Cap Index 14.22% 9.26% 9.06% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 155,233,000,000 |
| Holdings Count | Holding | 1,377 |
| Advisory Fees Paid, Amount | $ 2,566,000 |
| Investment Company Portfolio Turnover | 13% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 1,377 Portfolio Turnover Rate 13 % 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 Basic Materials 3.5 % Consumer Discretionary 16.0 % Consumer Staples 3.6 % Energy 4.5 % Financials 14.6 % Health Care 10.5 % Industrials 21.7 % Real Estate 7.1 % Technology 13.4 % Telecommunications 1.6 % Utilities 3.3 % Other Assets and Liabilities—Net 0.2 % |
| C000007799 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Growth Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | VISGX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Growth Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 $ 0.19 % |
| Expenses Paid, Amount | $ 21 |
| Expense Ratio, Percent | 0.19% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Growth Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Technology, industrial, and consumer discretionary stocks contributed the most to the benchmark’s return. Real estate, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 16.35% 7.56% 8.96% CRSP US Small Cap Growth Index 16.48% 7.66% 9.05% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 38,107,000,000 |
| Holdings Count | Holding | 596 |
| Advisory Fees Paid, Amount | $ 628,000 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 596 Portfolio Turnover Rate 21 % 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 Basic Materials 1.7 % Consumer Discretionary 16.1 % Consumer Staples 3.3 % Energy 5.3 % Financials 5.8 % Health Care 16.2 % Industrials 20.3 % Real Estate 5.2 % Technology 22.7 % Telecommunications 2.1 % Utilities 1.2 % Other Assets and Liabilities—Net 0.1 % |
| C000007801 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Growth Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VBK |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Growth Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 ETF Shares $ 0.07 % |
| Expenses Paid, Amount | $ 8 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Growth Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Technology, industrial, and consumer discretionary stocks contributed the most to the benchmark’s return. Real estate, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 16.49% 7.69% 9.09% ETF Shares Market Price 16.49% 7.70% 9.09% CRSP US Small Cap Growth Index 16.48% 7.66% 9.05% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 38,107,000,000 |
| Holdings Count | Holding | 596 |
| Advisory Fees Paid, Amount | $ 628,000 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 596 Portfolio Turnover Rate 21 % 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 Basic Materials 1.7 % Consumer Discretionary 16.1 % Consumer Staples 3.3 % Energy 5.3 % Financials 5.8 % Health Care 16.2 % Industrials 20.3 % Real Estate 5.2 % Technology 22.7 % Telecommunications 2.1 % Utilities 1.2 % Other Assets and Liabilities—Net 0.1 % |
| C000105304 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Growth Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VSGAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Growth Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Admiral Shares $ 0.07 % |
| Expenses Paid, Amount | $ 8 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Growth Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Technology, industrial, and consumer discretionary stocks contributed the most to the benchmark’s return. Real estate, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 16.49% 7.69% 9.09% CRSP US Small Cap Growth Index 16.48% 7.66% 9.05% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 38,107,000,000 |
| Holdings Count | Holding | 596 |
| Advisory Fees Paid, Amount | $ 628,000 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 596 Portfolio Turnover Rate 21 % 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 Basic Materials 1.7 % Consumer Discretionary 16.1 % Consumer Staples 3.3 % Energy 5.3 % Financials 5.8 % Health Care 16.2 % Industrials 20.3 % Real Estate 5.2 % Technology 22.7 % Telecommunications 2.1 % Utilities 1.2 % Other Assets and Liabilities—Net 0.1 % |
| C000007800 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Growth Index Fund |
| Class Name | Institutional Shares |
| Trading Symbol | VSGIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Growth Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Shares $ 0.06 % |
| Expenses Paid, Amount | $ 6 |
| Expense Ratio, Percent | 0.06% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Growth Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Technology, industrial, and consumer discretionary stocks contributed the most to the benchmark’s return. Real estate, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned about 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $5,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Shares 16.50% 7.70% 9.10% CRSP US Small Cap Growth Index 16.48% 7.66% 9.05% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 38,107,000,000 |
| Holdings Count | Holding | 596 |
| Advisory Fees Paid, Amount | $ 628,000 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 596 Portfolio Turnover Rate 21 % 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 Basic Materials 1.7 % Consumer Discretionary 16.1 % Consumer Staples 3.3 % Energy 5.3 % Financials 5.8 % Health Care 16.2 % Industrials 20.3 % Real Estate 5.2 % Technology 22.7 % Telecommunications 2.1 % Utilities 1.2 % Other Assets and Liabilities—Net 0.1 % |
| C000007802 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Value Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | VISVX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Value Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 $ 0.19 % |
| Expenses Paid, Amount | $ 20 |
| Expense Ratio, Percent | 0.19% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Value Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Financial and industrial stocks contributed the most to the benchmark’s return. Consumer discretionary and real estate also performed well. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned nearly 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 12.25% 9.77% 8.54% CRSP US Small Cap Value Index 12.42% 9.89% 8.67% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 58,332,000,000 |
| Holdings Count | Holding | 845 |
| Advisory Fees Paid, Amount | $ 997,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 845 Portfolio Turnover Rate 16 % 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 Basic Materials 4.9 % Consumer Discretionary 15.8 % Consumer Staples 3.9 % Energy 3.8 % Financials 21.3 % Health Care 6.1 % Industrials 22.8 % Real Estate 8.6 % Technology 6.2 % Telecommunications 1.2 % Utilities 5.0 % Other Assets and Liabilities—Net 0.4 % |
| C000007804 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Value Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VBR |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Value Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 ETF Shares $ 0.07 % |
| Expenses Paid, Amount | $ 7 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Value Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Financial and industrial stocks contributed the most to the benchmark’s return. Consumer discretionary and real estate also performed well. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned nearly 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 12.39% 9.89% 8.67% ETF Shares Market Price 12.30% 9.89% 8.67% CRSP US Small Cap Value Index 12.42% 9.89% 8.67% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 58,332,000,000 |
| Holdings Count | Holding | 845 |
| Advisory Fees Paid, Amount | $ 997,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 845 Portfolio Turnover Rate 16 % 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 Basic Materials 4.9 % Consumer Discretionary 15.8 % Consumer Staples 3.9 % Energy 3.8 % Financials 21.3 % Health Care 6.1 % Industrials 22.8 % Real Estate 8.6 % Technology 6.2 % Telecommunications 1.2 % Utilities 5.0 % Other Assets and Liabilities—Net 0.4 % |
| C000105305 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Value Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VSIAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Value Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Admiral Shares $ 0.07 % |
| Expenses Paid, Amount | $ 7 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Value Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Financial and industrial stocks contributed the most to the benchmark’s return. Consumer discretionary and real estate also performed well. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned nearly 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 12.39% 9.90% 8.67% CRSP US Small Cap Value Index 12.42% 9.89% 8.67% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 58,332,000,000 |
| Holdings Count | Holding | 845 |
| Advisory Fees Paid, Amount | $ 997,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 845 Portfolio Turnover Rate 16 % 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 Basic Materials 4.9 % Consumer Discretionary 15.8 % Consumer Staples 3.9 % Energy 3.8 % Financials 21.3 % Health Care 6.1 % Industrials 22.8 % Real Estate 8.6 % Technology 6.2 % Telecommunications 1.2 % Utilities 5.0 % Other Assets and Liabilities—Net 0.4 % |
| C000007803 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Small-Cap Value Index Fund |
| Class Name | Institutional Shares |
| Trading Symbol | VSIIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Small-Cap Value Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Institutional Shares $ 0.06 % |
| Expenses Paid, Amount | $ 6 |
| Expense Ratio, Percent | 0.06% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Small Cap Value Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. But near the end of the period, reduced expectations for further rate cuts weighed on stock returns and bond prices. Ten of the benchmark’s 11 industry sectors produced positive returns. Financial and industrial stocks contributed the most to the benchmark’s return. Consumer discretionary and real estate also performed well. Basic materials, the only sector that posted a negative return, was the lone detractor. For the decade ended December 31, 2024, the Fund performed in line with its benchmark, which returned nearly 9%, annualized. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $5,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Shares 12.41% 9.91% 8.68% CRSP US Small Cap Value Index 12.42% 9.89% 8.67% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 58,332,000,000 |
| Holdings Count | Holding | 845 |
| Advisory Fees Paid, Amount | $ 997,000 |
| Investment Company Portfolio Turnover | 16% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 845 Portfolio Turnover Rate 16 % 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 Basic Materials 4.9 % Consumer Discretionary 15.8 % Consumer Staples 3.9 % Energy 3.8 % Financials 21.3 % Health Care 6.1 % Industrials 22.8 % Real Estate 8.6 % Technology 6.2 % Telecommunications 1.2 % Utilities 5.0 % Other Assets and Liabilities—Net 0.4 % |
| C000007805 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Total Stock Market Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | VTSMX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Total Stock Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 $ 0.14 % |
| Expenses Paid, Amount | $ 16 |
| Expense Ratio, Percent | 0.14% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Total Market Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Ten of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Technology, the index’s largest sector by weight, posted extremely strong returns and was by far the greatest contributor to results. Consumer discretionary and financials were also among the top contributors. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 23.61% 13.69% 12.38% CRSP US Total Market Index 23.77% 13.81% 12.50% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 1,777,963,000,000 |
| Holdings Count | Holding | 3,624 |
| Advisory Fees Paid, Amount | $ 33,526,000 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,624 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 Basic Materials 1.4 % Consumer Discretionary 15.1 % Consumer Staples 3.9 % Energy 3.4 % Financials 11.3 % Health Care 10.0 % Industrials 12.5 % Real Estate 2.6 % Technology 35.0 % Telecommunications 1.9 % Utilities 2.6 % Other Assets and Liabilities—Net 0.3 % |
| Material Fund Change [Text Block] | How has the Fund changed? The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Strategies [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Material Fund Change Risks Change [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000007808 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Total Stock Market Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VTI |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Total Stock Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 ETF Shares $ 0.03 % |
| Expenses Paid, Amount | $ 3 |
| Expense Ratio, Percent | 0.03% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Total Market Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Ten of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Technology, the index’s largest sector by weight, posted extremely strong returns and was by far the greatest contributor to results. Consumer discretionary and financials were also among the top contributors. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 23.75% 13.80% 12.50% ETF Shares Market Price 23.71% 13.81% 12.50% CRSP US Total Market Index 23.77% 13.81% 12.50% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 1,777,963,000,000 |
| Holdings Count | Holding | 3,624 |
| Advisory Fees Paid, Amount | $ 33,526,000 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,624 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 Basic Materials 1.4 % Consumer Discretionary 15.1 % Consumer Staples 3.9 % Energy 3.4 % Financials 11.3 % Health Care 10.0 % Industrials 12.5 % Real Estate 2.6 % Technology 35.0 % Telecommunications 1.9 % Utilities 2.6 % Other Assets and Liabilities—Net 0.3 % |
| Material Fund Change [Text Block] | How has the Fund changed? The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Strategies [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Material Fund Change Risks Change [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000007806 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Total Stock Market Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VTSAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Total Stock Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 Admiral Shares $ 0.04 % |
| Expenses Paid, Amount | $ 4 |
| Expense Ratio, Percent | 0.04% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Total Market Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Ten of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Technology, the index’s largest sector by weight, posted extremely strong returns and was by far the greatest contributor to results. Consumer discretionary and financials were also among the top contributors. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 23.74% 13.80% 12.49% CRSP US Total Market Index 23.77% 13.81% 12.50% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 1,777,963,000,000 |
| Holdings Count | Holding | 3,624 |
| Advisory Fees Paid, Amount | $ 33,526,000 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,624 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 Basic Materials 1.4 % Consumer Discretionary 15.1 % Consumer Staples 3.9 % Energy 3.4 % Financials 11.3 % Health Care 10.0 % Industrials 12.5 % Real Estate 2.6 % Technology 35.0 % Telecommunications 1.9 % Utilities 2.6 % Other Assets and Liabilities—Net 0.3 % |
| Material Fund Change [Text Block] | How has the Fund changed? The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Strategies [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Material Fund Change Risks Change [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000007807 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Total Stock Market Index Fund |
| Class Name | Institutional Shares |
| Trading Symbol | VITSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Total Stock Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 Institutional Shares $ 0.03 % |
| Expenses Paid, Amount | $ 3 |
| Expense Ratio, Percent | 0.03% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Total Market Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Ten of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Technology, the index’s largest sector by weight, posted extremely strong returns and was by far the greatest contributor to results. Consumer discretionary and financials were also among the top contributors. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $5,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Institutional Shares 23.75% 13.81% 12.50% CRSP US Total Market Index 23.77% 13.81% 12.50% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 1,777,963,000,000 |
| Holdings Count | Holding | 3,624 |
| Advisory Fees Paid, Amount | $ 33,526,000 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,624 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 Basic Materials 1.4 % Consumer Discretionary 15.1 % Consumer Staples 3.9 % Energy 3.4 % Financials 11.3 % Health Care 10.0 % Industrials 12.5 % Real Estate 2.6 % Technology 35.0 % Telecommunications 1.9 % Utilities 2.6 % Other Assets and Liabilities—Net 0.3 % |
| Material Fund Change [Text Block] | How has the Fund changed? The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Strategies [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Material Fund Change Risks Change [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000155407 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Total Stock Market Index Fund |
| Class Name | Institutional Plus Shares |
| Trading Symbol | VSMPX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Total Stock Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 Institutional Plus Shares $ 0.02 % |
| Expenses Paid, Amount | $ 2 |
| Expense Ratio, Percent | 0.02% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Total Market Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Ten of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Technology, the index’s largest sector by weight, posted extremely strong returns and was by far the greatest contributor to results. Consumer discretionary and financials were also among the top contributors. |
| 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: April 28, 2015, Through December 31, 2024 Initial Investment of $100,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception Institutional Plus Shares 23.76% 13.82% 12.52 % CRSP US Total Market Index 23.77% 13.81% 12.51% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| Performance Inception Date | Apr. 28, 2015 |
| 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 | $ 1,777,963,000,000 |
| Holdings Count | Holding | 3,624 |
| Advisory Fees Paid, Amount | $ 33,526,000 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,624 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 Basic Materials 1.4 % Consumer Discretionary 15.1 % Consumer Staples 3.9 % Energy 3.4 % Financials 11.3 % Health Care 10.0 % Industrials 12.5 % Real Estate 2.6 % Technology 35.0 % Telecommunications 1.9 % Utilities 2.6 % Other Assets and Liabilities—Net 0.3 % |
| Material Fund Change [Text Block] | How has the Fund changed? The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Strategies [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Material Fund Change Risks Change [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000170276 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Total Stock Market Index Fund |
| Class Name | Institutional Select Shares |
| Trading Symbol | VSTSX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Total Stock Market Index Fund (the "Fund") for the period of January 1, 2024 |
| 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. |
| 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 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 Institutional Select Shares $ 0.01 % |
| Expenses Paid, Amount | $ 1 |
| Expense Ratio, Percent | 0.01% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed in line with its benchmark, the CRSP US Total Market Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Ten of the benchmark’s 11 industry sectors recorded positive returns for the 12 months. Technology, the index’s largest sector by weight, posted extremely strong returns and was by far the greatest contributor to results. Consumer discretionary and financials were also among the top contributors. |
| 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 27, 2016, Through December 31, 2024 Initial Investment of $5,000,000,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years Since Inception Institutional Select Shares 23.78% 13.83% 15.00 % CRSP US Total Market Index 23.77% 13.81% 14.98% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 14.95% |
| Performance Inception Date | Jun. 27, 2016 |
| 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 | $ 1,777,963,000,000 |
| Holdings Count | Holding | 3,624 |
| Advisory Fees Paid, Amount | $ 33,526,000 |
| Investment Company Portfolio Turnover | 2% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 3,624 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 Basic Materials 1.4 % Consumer Discretionary 15.1 % Consumer Staples 3.9 % Energy 3.4 % Financials 11.3 % Health Care 10.0 % Industrials 12.5 % Real Estate 2.6 % Technology 35.0 % Telecommunications 1.9 % Utilities 2.6 % Other Assets and Liabilities—Net 0.3 % |
| Material Fund Change [Text Block] | How has the Fund changed? The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447. |
| Material Fund Change Strategies [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Material Fund Change Risks Change [Text Block] | The Fund's principal investment strategy disclosure was modified to add that the Fund may become nondiversified under the Investment Company Act of 1940 solely as a result of an index rebalance or market movement. The Fund added nondiversification risk and sector risk as principal risks. |
| Summary of Change Legend [Text Block] | This is a summary of certain changes to the Fund since December 31, 2023. For more complete information, you may review the Fund’s next prospectus, which we expect to be available by April 30, 2025, 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 |
| C000034427 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Growth Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | VMGIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Growth Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 $ 0.19 % |
| Expenses Paid, Amount | $ 21 |
| Expense Ratio, Percent | 0.19% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Growth Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Seven of the benchmark’s 11 industry sectors posted positive returns. Industrials, information technology, and consumer discretionary contributed most to the benchmark’s total return. Health care, consumer staples, energy, and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 16.27% 10.44% 10.26% CRSP US Mid Cap Growth Index 16.48% 10.62% 10.45% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 27,704,000,000 |
| Holdings Count | Holding | 143 |
| Advisory Fees Paid, Amount | $ 456,000 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 143 Portfolio Turnover Rate 21 % 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 Basic Materials 1.1 % Consumer Discretionary 15.8 % Consumer Staples 1.2 % Energy 5.4 % Financials 8.5 % Health Care 11.7 % Industrials 21.3 % Real Estate 6.8 % Technology 21.7 % Telecommunications 2.1 % Utilities 4.3 % Other Assets and Liabilities—Net 0.1 % |
| C000034428 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Growth Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VOT |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Growth Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 ETF Shares $ 0.07 % |
| Expenses Paid, Amount | $ 8 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Growth Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Seven of the benchmark’s 11 industry sectors posted positive returns. Industrials, information technology, and consumer discretionary contributed most to the benchmark’s total return. Health care, consumer staples, energy, and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 16.41% 10.57% 10.40% ETF Shares Market Price 16.30% 10.56% 10.39% CRSP US Mid Cap Growth Index 16.48% 10.62% 10.45% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 27,704,000,000 |
| Holdings Count | Holding | 143 |
| Advisory Fees Paid, Amount | $ 456,000 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 143 Portfolio Turnover Rate 21 % 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 Basic Materials 1.1 % Consumer Discretionary 15.8 % Consumer Staples 1.2 % Energy 5.4 % Financials 8.5 % Health Care 11.7 % Industrials 21.3 % Real Estate 6.8 % Technology 21.7 % Telecommunications 2.1 % Utilities 4.3 % Other Assets and Liabilities—Net 0.1 % |
| C000105306 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Growth Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VMGMX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Growth Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Admiral Shares $ 0.07 % |
| Expenses Paid, Amount | $ 8 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Growth Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Seven of the benchmark’s 11 industry sectors posted positive returns. Industrials, information technology, and consumer discretionary contributed most to the benchmark’s total return. Health care, consumer staples, energy, and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 16.41% 10.57% 10.40% CRSP US Mid Cap Growth Index 16.48% 10.62% 10.45% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 27,704,000,000 |
| Holdings Count | Holding | 143 |
| Advisory Fees Paid, Amount | $ 456,000 |
| Investment Company Portfolio Turnover | 21% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 143 Portfolio Turnover Rate 21 % 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 Basic Materials 1.1 % Consumer Discretionary 15.8 % Consumer Staples 1.2 % Energy 5.4 % Financials 8.5 % Health Care 11.7 % Industrials 21.3 % Real Estate 6.8 % Technology 21.7 % Telecommunications 2.1 % Utilities 4.3 % Other Assets and Liabilities—Net 0.1 % |
| C000034429 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Value Index Fund |
| Class Name | Investor Shares |
| Trading Symbol | VMVIX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Value Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 $ 0.19 % |
| Expenses Paid, Amount | $ 20 |
| Expense Ratio, Percent | 0.19% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Value Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Financials, the second-largest sector in the index, was by far the greatest contributor to results. Other notable contributors included industrials and utilities. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Investor Shares 13.89% 8.63% 8.37% CRSP US Mid Cap Value Index 14.05% 8.79% 8.53% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 30,104,000,000 |
| Holdings Count | Holding | 195 |
| Advisory Fees Paid, Amount | $ 532,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 195 Portfolio Turnover Rate 19 % 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 Basic Materials 3.9 % Consumer Discretionary 10.8 % Consumer Staples 9.9 % Energy 5.6 % Financials 17.7 % Health Care 6.0 % Industrials 18.8 % Real Estate 8.4 % Technology 7.4 % Utilities 11.3 % Other Assets and Liabilities—Net 0.2 % |
| C000034430 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Value Index Fund |
| Class Name | ETF Shares |
| Trading Symbol | VOE |
| Security Exchange Name | NYSEArca |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Value Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 ETF Shares $ 0.07 % |
| Expenses Paid, Amount | $ 7 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Value Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Financials, the second-largest sector in the index, was by far the greatest contributor to results. Other notable contributors included industrials and utilities. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years ETF Shares Net Asset Value 14.03% 8.76% 8.49% ETF Shares Market Price 14.00% 8.76% 8.49% CRSP US Mid Cap Value Index 14.05% 8.79% 8.53% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 30,104,000,000 |
| Holdings Count | Holding | 195 |
| Advisory Fees Paid, Amount | $ 532,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 195 Portfolio Turnover Rate 19 % 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 Basic Materials 3.9 % Consumer Discretionary 10.8 % Consumer Staples 9.9 % Energy 5.6 % Financials 17.7 % Health Care 6.0 % Industrials 18.8 % Real Estate 8.4 % Technology 7.4 % Utilities 11.3 % Other Assets and Liabilities—Net 0.2 % |
| C000105307 [Member] | |
| Shareholder Report [Line Items] | |
| Fund Name | Vanguard Mid-Cap Value Index Fund |
| Class Name | Admiral™ Shares |
| Trading Symbol | VMVAX |
| Annual or Semi-Annual Statement [Text Block] | This annual shareholder report contains important information about Vanguard Mid-Cap Value Index Fund (the "Fund") for the period of January 1, 2024 |
| 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 Admiral Shares $ 0.07 % |
| Expenses Paid, Amount | $ 7 |
| Expense Ratio, Percent | 0.07% |
| Factors Affecting Performance [Text Block] | How did the Fund perform during the reporting period? For the 12 months ended December 31, 2024, the Fund performed roughly in line with its benchmark, the CRSP US Mid Cap Value Index. U.S. economic growth hovered around 3% on a year-over-year basis for much of the period, and consumer price inflation trended lower, falling below 3% in July. The Federal Reserve began cutting short-term interest rates in September, which boosted stock returns, as did the prospect of tax cuts and deregulation under the incoming administration. Nine of the benchmark’s 11 industry sectors posted positive returns. Financials, the second-largest sector in the index, was by far the greatest contributor to results. Other notable contributors included industrials and utilities. Health care and basic materials stocks detracted. |
| 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: December 31, 2014, Through December 31, 2024 Initial Investment of $10,000 |
| Average Annual Return [Table Text Block] | Average Annual Total Returns 1 Year 5 Years 10 Years Admiral Shares 14.03% 8.76% 8.50% CRSP US Mid Cap Value Index 14.05% 8.79% 8.53% Dow Jones U.S. Total Stock Market Float Adjusted Index 23.88% 13.78% 12.48% |
| 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 | $ 30,104,000,000 |
| Holdings Count | Holding | 195 |
| Advisory Fees Paid, Amount | $ 532,000 |
| Investment Company Portfolio Turnover | 19% |
| Additional Fund Statistics [Text Block] | Fund Statistics Fund Net Assets $ Number of Portfolio Holdings 195 Portfolio Turnover Rate 19 % 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 Basic Materials 3.9 % Consumer Discretionary 10.8 % Consumer Staples 9.9 % Energy 5.6 % Financials 17.7 % Health Care 6.0 % Industrials 18.8 % Real Estate 8.4 % Technology 7.4 % Utilities 11.3 % Other Assets and Liabilities—Net 0.2 % |
| Shareholder Report, Line Graph (Details) - USD ($) | 12 Months Ended | 60 Months Ended | 102 Months Ended | 116 Months Ended | 120 Months Ended | ||||||||||||
| Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jun. 27, 2016 | Dec. 31, 2015 | Apr. 28, 2015 | Dec. 31, 2014 | |
| C000007779 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 24,359 | $ 24,359 | $ 24,359 | $ 24,359 | $ 24,359 | $ 20,863 | $ 16,661 | $ 22,688 | $ 20,200 | $ 15,298 | $ 11,964 | $ 13,215 | $ 11,205 | $ 9,661 | $ 10,000 | ||
| Average Annual Return, Percent | 16.76% | 9.75% | 9.31% | ||||||||||||||
| C000007782 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 24,677 | $ 24,677 | 24,677 | 24,677 | $ 24,677 | 21,109 | 16,835 | 22,891 | 20,358 | 15,400 | 12,028 | 13,271 | 11,237 | 9,674 | 10,000 | ||
| Average Annual Return, Percent | 16.90% | 9.89% | 9.45% | ||||||||||||||
| C000007782 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 16.89% | 9.90% | 9.46% | ||||||||||||||
| C000007780 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 24,674 | $ 24,674 | 24,674 | 24,674 | $ 24,674 | 21,105 | 16,833 | 22,891 | 20,356 | 15,396 | 12,025 | 13,267 | 11,233 | 9,673 | 10,000 | ||
| Average Annual Return, Percent | 16.91% | 9.89% | 9.45% | ||||||||||||||
| C000007781 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||
| Account Value | $ 12,354,228 | $ 12,354,228 | 12,354,228 | 12,354,228 | $ 12,354,228 | 10,567,017 | 8,426,252 | 11,457,982 | 10,187,860 | 7,704,636 | 6,016,821 | 6,637,694 | 5,619,450 | 4,837,967 | 5,000,000 | ||
| Average Annual Return, Percent | 16.91% | 9.90% | 9.47% | ||||||||||||||
| C000096110 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Plus Shares | ||||||||||||||||
| Account Value | $ 247,352,854 | $ 247,352,854 | 247,352,854 | 247,352,854 | $ 247,352,854 | 211,530,010 | 168,666,170 | 229,336,401 | 203,896,889 | 154,184,971 | 120,395,033 | 132,807,026 | 112,425,205 | 96,767,321 | 100,000,000 | ||
| Average Annual Return, Percent | 16.94% | 9.91% | 9.48% | ||||||||||||||
| C000170275 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Select Shares | ||||||||||||||||
| Account Value | $ 7,922,858,348 | $ 7,922,858,348 | $ 7,922,858,348 | 7,922,858,348 | $ 7,922,858,348 | 6,774,235,879 | 5,400,211,085 | 7,341,275,991 | 6,525,718,808 | 4,933,766,489 | 3,851,646,935 | 4,247,412,241 | 3,594,227,165 | $ 3,000,000,000 | |||
| Average Annual Return, Percent | 16.96% | 9.94% | 12.09% | ||||||||||||||
| C000007791 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 24,592.854617 | $ 24,592.854617 | $ 24,592.854617 | 24,592.854617 | $ 24,592.854617 | 21,367.576141 | 18,446.22749 | 22,718.047992 | 18,267.64133 | 15,468.254717 | 11,820.776406 | 13,038.546121 | 10,945.819816 | 9,854.482135 | 10,000 | ||
| Average Annual Return, Percent | 15.09% | 9.72% | 9.42% | ||||||||||||||
| C000007794 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 24,908 | $ 24,908 | 24,908 | 24,908 | $ 24,908 | 21,616 | 18,636 | 22,917 | 18,405 | 15,569 | 11,881 | 13,086 | 10,974 | 9,866 | 10,000 | ||
| Average Annual Return, Percent | 15.23% | 9.85% | 9.56% | ||||||||||||||
| C000007794 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 15.28% | 9.87% | 9.56% | ||||||||||||||
| C000007792 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 24,892 | $ 24,892 | 24,892 | 24,892 | $ 24,892 | 21,603 | 18,627 | 22,913 | 18,403 | 15,564 | 11,878 | 13,086 | 10,973 | 9,866 | 10,000 | ||
| Average Annual Return, Percent | 15.22% | 9.85% | 9.55% | ||||||||||||||
| C000007793 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||
| Account Value | $ 12,459,174 | $ 12,459,174 | 12,459,174 | 12,459,174 | $ 12,459,174 | 10,812,162 | 9,320,956 | 11,465,550 | 9,207,215 | 7,785,280 | 5,940,946 | 6,545,902 | 5,487,225 | 4,933,382 | 5,000,000 | ||
| Average Annual Return, Percent | 15.23% | 9.86% | 9.56% | ||||||||||||||
| C000096111 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Plus Shares | ||||||||||||||||
| Account Value | $ 249,447,180 | $ 249,447,180 | 249,447,180 | 249,447,180 | $ 249,447,180 | 216,446,257 | 186,597,018 | 229,482,394 | 184,275,019 | 155,814,778 | 118,889,446 | 130,955,714 | 109,787,481 | 98,696,722 | 100,000,000 | ||
| Average Annual Return, Percent | 15.25% | 9.87% | 9.57% | ||||||||||||||
| C000007795 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 23,585.623536 | $ 23,585.623536 | 23,585.623536 | 23,585.623536 | $ 23,585.623536 | 20,671.583502 | 17,510.25118 | 21,279.0649 | 18,095.582634 | 15,211.014713 | 11,956.666073 | 13,201.341175 | 11,370.538294 | 9,621.912189 | 10,000 | ||
| Average Annual Return, Percent | 14.10% | 9.17% | 8.96% | ||||||||||||||
| C000007798 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 23,873 | $ 23,873 | 23,873 | 23,873 | $ 23,873 | 20,899 | 17,680 | 21,456 | 18,227 | 15,306 | 12,017 | 13,250 | 11,399 | 9,635 | 10,000 | ||
| Average Annual Return, Percent | 14.23% | 9.30% | 9.09% | ||||||||||||||
| C000007798 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 14.13% | 9.29% | 9.09% | ||||||||||||||
| C000007796 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 23,874 | $ 23,874 | 23,874 | 23,874 | $ 23,874 | 20,899 | 17,682 | 21,462 | 18,229 | 15,305 | 12,016 | 13,250 | 11,400 | 9,636 | 10,000 | ||
| Average Annual Return, Percent | 14.23% | 9.30% | 9.09% | ||||||||||||||
| C000007797 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||
| Account Value | $ 11,947,853 | $ 11,947,853 | 11,947,853 | 11,947,853 | $ 11,947,853 | 10,459,081 | 8,847,012 | 10,737,299 | 9,119,990 | 7,656,267 | 6,009,600 | 6,627,156 | 5,700,898 | 4,818,378 | 5,000,000 | ||
| Average Annual Return, Percent | 14.23% | 9.31% | 9.10% | ||||||||||||||
| C000096112 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Plus Shares | ||||||||||||||||
| Account Value | $ 239,223,634 | $ 239,223,634 | 239,223,634 | 239,223,634 | $ 239,223,634 | 209,385,759 | 177,108,334 | 214,926,660 | 182,529,187 | 153,215,861 | 120,261,169 | 132,595,357 | 114,044,268 | 96,375,231 | 100,000,000 | ||
| Average Annual Return, Percent | 14.25% | 9.32% | 9.11% | ||||||||||||||
| C000007799 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 23,581 | $ 23,581 | 23,581 | 23,581 | $ 23,581 | 20,267 | 16,711 | 23,370 | 22,135 | 16,381 | 12,354 | 13,115 | 10,769 | 9,736 | 10,000 | ||
| Average Annual Return, Percent | 16.35% | 7.56% | 8.96% | ||||||||||||||
| C000007801 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 23,867 | $ 23,867 | 23,867 | 23,867 | $ 23,867 | 20,489 | 16,875 | 23,567 | 22,294 | 16,479 | 12,413 | 13,160 | 10,796 | 9,749 | 10,000 | ||
| Average Annual Return, Percent | 16.49% | 7.69% | 9.09% | ||||||||||||||
| C000007801 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 16.49% | 7.70% | 9.09% | ||||||||||||||
| C000105304 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 23,862 | $ 23,862 | 23,862 | 23,862 | $ 23,862 | 20,485 | 16,873 | 23,563 | 22,295 | 16,478 | 12,412 | 13,160 | 10,795 | 9,748 | 10,000 | ||
| Average Annual Return, Percent | 16.49% | 7.69% | 9.09% | ||||||||||||||
| C000007800 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||
| Account Value | $ 11,942,305 | $ 11,942,305 | 11,942,305 | 11,942,305 | $ 11,942,305 | 10,251,213 | 8,441,167 | 11,788,034 | 11,151,917 | 8,241,475 | 6,207,152 | 6,581,700 | 5,397,362 | 4,873,972 | 5,000,000 | ||
| Average Annual Return, Percent | 16.50% | 7.70% | 9.10% | ||||||||||||||
| C000007802 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 22,701 | $ 22,701 | 22,701 | 22,701 | $ 22,701 | 20,223 | 17,455 | 19,273 | 15,062 | 14,247 | 11,619 | 13,255 | 11,870 | 9,522 | 10,000 | ||
| Average Annual Return, Percent | 12.25% | 9.77% | 8.54% | ||||||||||||||
| C000007804 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 22,971 | $ 22,971 | 22,971 | 22,971 | $ 22,971 | 20,439 | 17,619 | 19,424 | 15,166 | 14,332 | 11,675 | 13,300 | 11,897 | 9,533 | 10,000 | ||
| Average Annual Return, Percent | 12.39% | 9.89% | 8.67% | ||||||||||||||
| C000007804 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 12.30% | 9.89% | 8.67% | ||||||||||||||
| C000105305 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 22,972 | $ 22,972 | 22,972 | 22,972 | $ 22,972 | 20,439 | 17,622 | 19,431 | 15,170 | 14,332 | 11,674 | 13,301 | 11,897 | 9,535 | 10,000 | ||
| Average Annual Return, Percent | 12.39% | 9.90% | 8.67% | ||||||||||||||
| C000007803 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||
| Account Value | $ 11,496,908 | $ 11,496,908 | 11,496,908 | 11,496,908 | $ 11,496,908 | 10,227,572 | 8,817,264 | 9,722,516 | 7,589,325 | 7,169,067 | 5,837,586 | 6,650,889 | 5,948,867 | 4,766,694 | 5,000,000 | ||
| Average Annual Return, Percent | 12.41% | 9.91% | 8.68% | ||||||||||||||
| C000007805 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 32,115 | $ 32,115 | 32,115 | 32,115 | $ 32,115 | 25,982 | 20,639 | 25,671 | 20,441 | 16,911 | 12,944 | 13,662 | 11,286 | 10,029 | 10,000 | ||
| Average Annual Return, Percent | 23.61% | 13.69% | 12.38% | ||||||||||||||
| C000007808 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 32,467 | $ 32,467 | 32,467 | 32,467 | $ 32,467 | 26,236 | 20,818 | 25,861 | 20,571 | 17,008 | 13,003 | 13,706 | 11,312 | 10,040 | 10,000 | ||
| Average Annual Return, Percent | 23.75% | 13.80% | 12.50% | ||||||||||||||
| C000007808 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 23.71% | 13.81% | 12.50% | ||||||||||||||
| C000007806 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 32,443 | $ 32,443 | 32,443 | 32,443 | $ 32,443 | 26,218 | 20,807 | 25,855 | 20,567 | 16,999 | 12,996 | 13,704 | 11,310 | 10,039 | 10,000 | ||
| Average Annual Return, Percent | 23.74% | 13.80% | 12.49% | ||||||||||||||
| C000007807 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Shares | ||||||||||||||||
| Account Value | $ 16,238,514 | $ 16,238,514 | 16,238,514 | 16,238,514 | $ 16,238,514 | 13,121,899 | 10,412,938 | 12,937,405 | 10,289,572 | 8,503,870 | 6,500,745 | 6,854,596 | 5,657,003 | 5,020,751 | 5,000,000 | ||
| Average Annual Return, Percent | 23.75% | 13.81% | 12.50% | ||||||||||||||
| C000155407 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Plus Shares | ||||||||||||||||
| Account Value | $ 313,162,772 | $ 313,162,772 | 313,162,772 | $ 313,162,772 | $ 313,162,772 | 253,032,145 | 200,765,383 | 249,417,465 | 198,364,372 | 163,915,343 | 125,298,033 | 132,101,063 | 108,998,825 | 96,724,672 | $ 100,000,000 | ||
| Average Annual Return, Percent | 23.76% | 13.82% | 12.52% | ||||||||||||||
| C000170276 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Institutional Select Shares | ||||||||||||||||
| Account Value | $ 16,424,262,156 | $ 16,424,262,156 | $ 16,424,262,156 | $ 16,424,262,156 | 16,424,262,156 | 13,269,271,037 | 10,527,155,619 | 13,077,055,618 | 10,399,307,532 | 8,592,519,603 | 6,567,400,149 | 6,923,387,720 | 5,712,244,861 | 5,000,000,000 | |||
| Average Annual Return, Percent | 23.78% | 13.83% | 15% | ||||||||||||||
| C000034427 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 26,564.455548 | $ 26,564.455548 | $ 26,564.455548 | 26,564.455548 | $ 26,564.455548 | 22,846.561392 | 18,575.357393 | 26,136.389873 | 21,722.372969 | 16,171.998465 | 12,093.873627 | 12,830.890424 | 10,541.508456 | 9,887.141876 | 10,000 | ||
| Average Annual Return, Percent | 16.27% | 10.44% | 10.26% | ||||||||||||||
| C000034428 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 26,887.259785 | $ 26,887.259785 | 26,887.259785 | 26,887.259785 | $ 26,887.259785 | 23,096.680061 | 18,756.303467 | 26,357.399605 | 21,878.089944 | 16,271.547655 | 12,155.224975 | 12,876.19324 | 10,568.937299 | 9,900.30143099999 | 10,000 | ||
| Average Annual Return, Percent | 16.41% | 10.57% | 10.40% | ||||||||||||||
| C000034428 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 16.30% | 10.56% | 10.39% | ||||||||||||||
| C000105306 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 26,889.252828 | $ 26,889.252828 | 26,889.252828 | 26,889.252828 | $ 26,889.252828 | 23,099.198811 | 18,759.039613 | 26,362.344894 | 21,881.911019 | 16,271.729124 | 12,156.130418 | 12,877.908249 | 10,570.491178 | 9,902.151893 | 10,000 | ||
| Average Annual Return, Percent | 16.41% | 10.57% | 10.40% | ||||||||||||||
| C000034429 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Investor Shares | ||||||||||||||||
| Account Value | $ 22,331 | $ 22,331 | 22,331 | 22,331 | $ 22,331 | 19,607 | 17,885 | 19,441 | 15,118 | 14,760 | 11,547 | 13,201 | 11,291 | 9,809 | 10,000 | ||
| Average Annual Return, Percent | 13.89% | 8.63% | 8.37% | ||||||||||||||
| C000034430 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Net Asset Value | ||||||||||||||||
| Account Value | $ 22,596 | $ 22,596 | 22,596 | 22,596 | $ 22,596 | 19,816 | 18,052 | 19,596 | 15,222 | 14,852 | 11,604 | 13,248 | 11,318 | 9,820 | 10,000 | ||
| Average Annual Return, Percent | 14.03% | 8.76% | 8.49% | ||||||||||||||
| C000034430 [Member] | Without Sales Load [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | ETF Shares Market Price | ||||||||||||||||
| Average Annual Return, Percent | 14% | 8.76% | 8.49% | ||||||||||||||
| C000105307 [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Admiral Shares | ||||||||||||||||
| Account Value | $ 22,601 | $ 22,601 | 22,601 | 22,601 | $ 22,601 | 19,820 | 18,057 | 19,606 | 15,227 | 14,849 | 11,602 | 13,248 | 11,318 | 9,820 | 10,000 | ||
| Average Annual Return, Percent | 14.03% | 8.76% | 8.50% | ||||||||||||||
| Dow Jones U S Total Stock Market Float Adjusted Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | Dow Jones U.S. Total Stock Market Float Adjusted Index | ||||||||||||||||
| Account Value | $ 32,405 | $ 32,405 | $ 32,405 | $ 32,405 | $ 32,405 | 26,160 | 20,752 | 25,788 | 20,523 | 16,990 | 12,979 | 13,705 | 11,312 | 3,000,000,000 | 10,044 | 100,000,000 | 10,000 |
| Average Annual Return, Percent | 23.88% | 13.78% | 14.95% | 12.48% | 12.48% | ||||||||||||
| S And P Completion Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | S&P Completion Index | ||||||||||||||||
| Account Value | $ 24,403 | $ 24,403 | $ 24,403 | $ 24,403 | $ 24,403 | 20,878 | 16,706 | 22,742 | 20,242 | 15,315 | 11,970 | 13,237 | 11,207 | 3,000,000,000 | 9,665 | 10,000 | |
| Average Annual Return, Percent | 16.88% | 9.77% | 11.91% | 9.33% | |||||||||||||
| CRSP US Mid Cap Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | CRSP US Mid Cap Index | ||||||||||||||||
| Account Value | $ 24,951.008232 | $ 24,951.008232 | $ 24,951.008232 | 24,951.008232 | $ 24,951.008232 | 21,649.263789 | 18,666.582199 | 22,955.713455 | 18,434.712897 | 15,590.342089 | 11,892.909639 | 13,101.323137 | 10,982.24863 | 9,872.111774 | 10,000 | ||
| Average Annual Return, Percent | 15.25% | 9.86% | 9.57% | ||||||||||||||
| CRSP US Small Cap Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | CRSP US Small Cap Index | ||||||||||||||||
| Account Value | $ 23,805.11534 | $ 23,805.11534 | 23,805.11534 | 23,805.11534 | $ 23,805.11534 | 20,842.004669 | 17,649.724935 | 21,429.811274 | 18,205.042355 | 15,288.966806 | 12,005.513602 | 13,240.452405 | 11,390.979456 | 9,631.92367 | 10,000 | ||
| Average Annual Return, Percent | 14.22% | 9.26% | 9.06% | ||||||||||||||
| CRSP US Small Cap Growth Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | CRSP US Small Cap Growth Index | ||||||||||||||||
| Account Value | $ 23,786 | $ 23,786 | 23,786 | 23,786 | $ 23,786 | 20,421 | 16,838 | 23,528 | 22,258 | 16,444 | 12,388 | 13,134 | 10,775 | 9,740 | 10,000 | ||
| Average Annual Return, Percent | 16.48% | 7.66% | 9.05% | ||||||||||||||
| CRSP US Small Cap Value Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | CRSP US Small Cap Value Index | ||||||||||||||||
| Account Value | $ 22,970 | $ 22,970 | 22,970 | 22,970 | $ 22,970 | 20,432 | 17,627 | 19,428 | 15,161 | 14,336 | 11,678 | 13,311 | 11,903 | 9,536 | 10,000 | ||
| Average Annual Return, Percent | 12.42% | 9.89% | 8.67% | ||||||||||||||
| CRSP US Total Market Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | CRSP US Total Market Index | ||||||||||||||||
| Account Value | $ 32,483 | $ 32,483 | $ 32,483 | $ 32,483 | $ 32,483 | 26,244 | 20,832 | 25,877 | 20,582 | 17,011 | 13,002 | 13,710 | 11,313 | $ 5,000,000,000 | 10,040 | $ 100,000,000 | 10,000 |
| Average Annual Return, Percent | 23.77% | 13.81% | 14.98% | 12.51% | 12.50% | ||||||||||||
| CRSP US Mid Cap Growth Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | CRSP US Mid Cap Growth Index | ||||||||||||||||
| Account Value | $ 27,015.766903 | $ 27,015.766903 | $ 27,015.766903 | $ 27,015.766903 | $ 27,015.766903 | 23,194.177765 | 18,825.840183 | 26,451.683441 | 21,949.820923 | 16,311.95958 | 12,179.495728 | 12,897.462142 | 10,578.216117 | 9,906.764271 | 10,000 | ||
| Average Annual Return, Percent | 16.48% | 10.62% | 10.45% | ||||||||||||||
| CRSP US Mid Cap Value Index [Member] | |||||||||||||||||
| Account Value [Line Items] | |||||||||||||||||
| Line Graph and Table Measure Name | CRSP US Mid Cap Value Index | ||||||||||||||||
| Account Value | $ 22,667 | $ 22,667 | $ 22,667 | $ 22,667 | $ 22,667 | $ 19,875 | $ 18,104 | $ 19,644 | $ 15,248 | $ 14,877 | $ 11,617 | $ 13,265 | $ 11,326 | $ 9,825 | $ 10,000 | ||
| Average Annual Return, Percent | 14.05% | 8.79% | 8.53% |
| Shareholder Report, Holdings (Details) | Dec. 31, 2024 |
| C000007779 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000007779 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000007779 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000007779 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000007779 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18% |
| C000007779 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000007779 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000007779 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000007779 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000007779 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000007779 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000007779 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000007782 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000007782 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000007782 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000007782 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000007782 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18% |
| C000007782 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000007782 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000007782 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000007782 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000007782 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000007782 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000007782 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000007780 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000007780 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000007780 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000007780 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000007780 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18% |
| C000007780 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000007780 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000007780 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000007780 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000007780 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000007780 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000007780 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000007781 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000007781 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000007781 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000007781 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000007781 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18% |
| C000007781 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000007781 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000007781 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000007781 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000007781 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000007781 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000007781 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000096110 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000096110 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000096110 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000096110 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000096110 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18% |
| C000096110 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000096110 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000096110 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000096110 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000096110 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000096110 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000096110 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000170275 [Member] | Communications Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000170275 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12% |
| C000170275 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3% |
| C000170275 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.10% |
| C000170275 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18% |
| C000170275 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.40% |
| C000170275 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.40% |
| C000170275 [Member] | Information Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.90% |
| C000170275 [Member] | Materials Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.70% |
| C000170275 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000170275 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000170275 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000007791 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000007791 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000007791 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000007791 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000007791 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000007791 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.90% |
| C000007791 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000007791 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000007791 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007791 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000007791 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000007791 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000007794 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000007794 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000007794 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000007794 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000007794 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000007794 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.90% |
| C000007794 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000007794 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000007794 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007794 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000007794 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000007794 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000007792 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000007792 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000007792 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000007792 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000007792 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000007792 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.90% |
| C000007792 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000007792 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000007792 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007792 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000007792 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000007792 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000007793 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000007793 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000007793 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000007793 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000007793 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000007793 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.90% |
| C000007793 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000007793 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000007793 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007793 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000007793 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000007793 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000096111 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.10% |
| C000096111 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.90% |
| C000096111 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.50% |
| C000096111 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.50% |
| C000096111 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000096111 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 19.90% |
| C000096111 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.60% |
| C000096111 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.20% |
| C000096111 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000096111 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.90% |
| C000096111 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.90% |
| C000096111 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000007795 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16% |
| C000007795 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000007795 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000007795 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000007795 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000007795 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000007795 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000007795 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000007795 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000007795 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000007795 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000007795 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000007798 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16% |
| C000007798 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000007798 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000007798 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000007798 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000007798 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000007798 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000007798 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000007798 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000007798 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000007798 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000007798 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000007796 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16% |
| C000007796 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000007796 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000007796 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000007796 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000007796 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000007796 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000007796 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000007796 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000007796 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000007796 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000007796 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000007797 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16% |
| C000007797 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000007797 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000007797 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000007797 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000007797 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000007797 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000007797 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000007797 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000007797 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000007797 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000007797 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000096112 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16% |
| C000096112 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.60% |
| C000096112 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.50% |
| C000096112 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.60% |
| C000096112 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.50% |
| C000096112 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000096112 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.10% |
| C000096112 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000096112 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.50% |
| C000096112 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.60% |
| C000096112 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 13.40% |
| C000096112 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000007799 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000007799 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000007799 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000007799 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000007799 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| C000007799 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.30% |
| C000007799 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000007799 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000007799 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000007799 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000007799 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.70% |
| C000007799 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000007801 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000007801 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000007801 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000007801 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000007801 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| C000007801 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.30% |
| C000007801 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000007801 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000007801 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000007801 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000007801 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.70% |
| C000007801 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000105304 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000105304 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000105304 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000105304 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000105304 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| C000105304 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.30% |
| C000105304 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000105304 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000105304 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000105304 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000105304 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.70% |
| C000105304 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000007800 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.10% |
| C000007800 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.30% |
| C000007800 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.30% |
| C000007800 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.80% |
| C000007800 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 16.20% |
| C000007800 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 20.30% |
| C000007800 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.20% |
| C000007800 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000007800 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.70% |
| C000007800 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000007800 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.70% |
| C000007800 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000007802 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000007802 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000007802 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000007802 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000007802 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000007802 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.80% |
| C000007802 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000007802 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000007802 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000007802 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000007802 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000007802 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000007804 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000007804 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000007804 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000007804 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000007804 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000007804 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.80% |
| C000007804 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000007804 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000007804 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000007804 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000007804 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000007804 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000105305 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000105305 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000105305 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000105305 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000105305 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000105305 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.80% |
| C000105305 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000105305 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000105305 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000105305 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000105305 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000105305 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000007803 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000007803 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000007803 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.80% |
| C000007803 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000007803 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.10% |
| C000007803 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 22.80% |
| C000007803 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.60% |
| C000007803 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5% |
| C000007803 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.90% |
| C000007803 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000007803 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.20% |
| C000007803 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.40% |
| C000007805 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000007805 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000007805 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000007805 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000007805 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000007805 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000007805 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007805 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007805 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000007805 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000007805 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| C000007805 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000007808 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000007808 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000007808 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000007808 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000007808 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000007808 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000007808 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007808 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007808 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000007808 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000007808 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| C000007808 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000007806 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000007806 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000007806 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000007806 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000007806 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000007806 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000007806 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007806 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007806 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000007806 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000007806 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| C000007806 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000007807 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000007807 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000007807 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000007807 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000007807 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000007807 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000007807 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007807 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000007807 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000007807 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000007807 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| C000007807 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000155407 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000155407 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000155407 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000155407 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000155407 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000155407 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000155407 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000155407 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000155407 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000155407 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000155407 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| C000155407 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000170276 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.10% |
| C000170276 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000170276 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.40% |
| C000170276 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000170276 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10% |
| C000170276 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 12.50% |
| C000170276 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000170276 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.60% |
| C000170276 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.40% |
| C000170276 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.90% |
| C000170276 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 35% |
| C000170276 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.30% |
| C000034427 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000034427 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000034427 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000034427 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000034427 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000034427 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000034427 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000034427 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000034427 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000034427 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000034427 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000034427 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000034428 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000034428 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000034428 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000034428 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000034428 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000034428 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000034428 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000034428 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000034428 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000034428 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000034428 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000034428 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000105306 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.80% |
| C000105306 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.20% |
| C000105306 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.40% |
| C000105306 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.50% |
| C000105306 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.70% |
| C000105306 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.30% |
| C000105306 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6.80% |
| C000105306 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 4.30% |
| C000105306 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.10% |
| C000105306 [Member] | Telecommunications [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 2.10% |
| C000105306 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 21.70% |
| C000105306 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.10% |
| C000034429 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000034429 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000034429 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000034429 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000034429 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| C000034429 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000034429 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000034429 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000034429 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000034429 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.40% |
| C000034429 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000034430 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000034430 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000034430 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000034430 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000034430 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| C000034430 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000034430 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000034430 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000034430 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000034430 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.40% |
| C000034430 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
| C000105307 [Member] | Consumer Discretionary Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 10.80% |
| C000105307 [Member] | Consumer Staples Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 9.90% |
| C000105307 [Member] | Energy Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.60% |
| C000105307 [Member] | Financial Services Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 17.70% |
| C000105307 [Member] | Healthcare Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 6% |
| C000105307 [Member] | Industrial Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 18.80% |
| C000105307 [Member] | Real Estate Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 8.40% |
| C000105307 [Member] | Utilities Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 11.30% |
| C000105307 [Member] | Basic Materials [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.90% |
| C000105307 [Member] | Technology Sector [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 7.40% |
| C000105307 [Member] | Other Assets and Liabilities Net [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.20% |
