This semi-annual shareholder report contains important information about Vanguard U.S. Growth Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$17	0.33%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 17

Expense Ratio, Percent

0.33%

AssetsNet

$ 46,437,000,000

Holdings Count | Holding

113

InvestmentCompanyPortfolioTurnover

15.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$46,437
Number of Portfolio Holdings	113
Portfolio Turnover Rate	15%

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

(as of February 28, 2025)

Communication Services	18.6%
Consumer Discretionary	17.5%
Consumer Staples	1.6%
Financials	8.4%
Health Care	8.6%
Industrials	3.9%
Information Technology	37.3%
Materials	0.0%
Real Estate	1.9%
Utilities	0.2%
Other Assets and Liabilities—Net	2.0%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012211

Shareholder Report [Line Items]

Fund Name

U.S. Growth Fund

Class Name

Admiral™ Shares

Trading Symbol

VWUAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard U.S. Growth Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$12	0.23%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 12

Expense Ratio, Percent

0.23%

AssetsNet

$ 46,437,000,000

Holdings Count | Holding

113

InvestmentCompanyPortfolioTurnover

15.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$46,437
Number of Portfolio Holdings	113
Portfolio Turnover Rate	15%

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

(as of February 28, 2025)

Communication Services	18.6%
Consumer Discretionary	17.5%
Consumer Staples	1.6%
Financials	8.4%
Health Care	8.6%
Industrials	3.9%
Information Technology	37.3%
Materials	0.0%
Real Estate	1.9%
Utilities	0.2%
Other Assets and Liabilities—Net	2.0%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012228

Shareholder Report [Line Items]

Fund Name

International Growth Fund

Class Name

Investor Shares

Trading Symbol

VWIGX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard International Growth Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$19	0.37%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 19

Expense Ratio, Percent

0.37%

AssetsNet

$ 44,437,000,000

Holdings Count | Holding

132

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$44,437
Number of Portfolio Holdings	132
Portfolio Turnover Rate	11%

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

(as of February 28, 2025)

Asia	31.7%
Europe	47.3%
North America	16.6%
Oceania	1.1%
South America	1.8%
Other Assets and Liabilities—Net	1.5%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012229

Shareholder Report [Line Items]

Fund Name

International Growth Fund

Class Name

Admiral™ Shares

Trading Symbol

VWILX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard International Growth Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$13	0.26%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 13

Expense Ratio, Percent

0.26%

AssetsNet

$ 44,437,000,000

Holdings Count | Holding

132

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$44,437
Number of Portfolio Holdings	132
Portfolio Turnover Rate	11%

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

(as of February 28, 2025)

Asia	31.7%
Europe	47.3%
North America	16.6%
Oceania	1.1%
South America	1.8%
Other Assets and Liabilities—Net	1.5%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000209798

Shareholder Report [Line Items]

Fund Name

FTSE Social Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VFTAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard FTSE Social Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$7	0.14%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 7

Expense Ratio, Percent

0.14%

AssetsNet

$ 22,649,000,000

Holdings Count | Holding

432

InvestmentCompanyPortfolioTurnover

3.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$22,649
Number of Portfolio Holdings	432
Portfolio Turnover Rate	3%

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

(as of February 28, 2025)

Basic Materials	1.3%
Consumer Discretionary	16.3%
Consumer Staples	4.2%
Energy	0.0%
Financials	10.7%
Health Care	11.4%
Industrials	9.0%
Real Estate	2.6%
Technology	41.2%
Telecommunications	2.6%
Utilities	0.5%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012204

Shareholder Report [Line Items]

Fund Name

FTSE Social Index Fund

Class Name

Institutional Shares

Trading Symbol

VFTNX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard FTSE Social Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Shares	$6	0.11%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 6

Expense Ratio, Percent

0.11%

AssetsNet

$ 22,649,000,000

Holdings Count | Holding

432

InvestmentCompanyPortfolioTurnover

3.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$22,649
Number of Portfolio Holdings	432
Portfolio Turnover Rate	3%

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

(as of February 28, 2025)

Basic Materials	1.3%
Consumer Discretionary	16.3%
Consumer Staples	4.2%
Energy	0.0%
Financials	10.7%
Health Care	11.4%
Industrials	9.0%
Real Estate	2.6%
Technology	41.2%
Telecommunications	2.6%
Utilities	0.5%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012209

Shareholder Report [Line Items]

Fund Name

Communication Services Index Fund

Class Name

ETF Shares

Trading Symbol

VOX

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Communication Services Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 4,986,000,000

Holdings Count | Holding

120

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$4,986
Number of Portfolio Holdings	120
Portfolio Turnover Rate	4%

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

(as of February 28, 2025)

Diversified Telecommunication Services	11.3%
Entertainment	21.2%
Interactive Media & Services	48.9%
Media	14.6%
Other	0.0%
Wireless Telecommunication Services	4.0%
Other Assets and Liabilities—Net	0.0%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012208

Shareholder Report [Line Items]

Fund Name

Communication Services Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VTCAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Communication Services Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 4,986,000,000

Holdings Count | Holding

120

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$4,986
Number of Portfolio Holdings	120
Portfolio Turnover Rate	4%

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

(as of February 28, 2025)

Diversified Telecommunication Services	11.3%
Entertainment	21.2%
Interactive Media & Services	48.9%
Media	14.6%
Other	0.0%
Wireless Telecommunication Services	4.0%
Other Assets and Liabilities—Net	0.0%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012215

Shareholder Report [Line Items]

Fund Name

Consumer Discretionary Index Fund

Class Name

ETF Shares

Trading Symbol

VCR

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Consumer Discretionary Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 6,915,000,000

Holdings Count | Holding

295

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$6,915
Number of Portfolio Holdings	295
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Automobile Components	1.8%
Automobiles	15.7%
Broadline Retail	25.1%
Distributors	0.8%
Diversified Consumer Services	1.8%
Hotels, Restaurants & Leisure	23.9%
Household Durables	4.8%
Leisure Products	0.9%
Specialty Retail	20.5%
Textiles, Apparel & Luxury Goods	4.5%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012214

Shareholder Report [Line Items]

Fund Name

Consumer Discretionary Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VCDAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Consumer Discretionary Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 6,915,000,000

Holdings Count | Holding

295

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$6,915
Number of Portfolio Holdings	295
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Automobile Components	1.8%
Automobiles	15.7%
Broadline Retail	25.1%
Distributors	0.8%
Diversified Consumer Services	1.8%
Hotels, Restaurants & Leisure	23.9%
Household Durables	4.8%
Leisure Products	0.9%
Specialty Retail	20.5%
Textiles, Apparel & Luxury Goods	4.5%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012217

Shareholder Report [Line Items]

Fund Name

Consumer Staples Index Fund

Class Name

ETF Shares

Trading Symbol

VDC

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Consumer Staples Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 8,843,000,000

Holdings Count | Holding

106

InvestmentCompanyPortfolioTurnover

5.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$8,843
Number of Portfolio Holdings	106
Portfolio Turnover Rate	5%

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

(as of February 28, 2025)

Beverages	18.1%
Consumer Staples Distribution & Retail	36.5%
Food Products	15.6%
Household Products	17.9%
Personal Care Products	3.7%
Tobacco	8.0%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012216

Shareholder Report [Line Items]

Fund Name

Consumer Staples Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VCSAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Consumer Staples Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 8,843,000,000

Holdings Count | Holding

106

InvestmentCompanyPortfolioTurnover

5.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$8,843
Number of Portfolio Holdings	106
Portfolio Turnover Rate	5%

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

(as of February 28, 2025)

Beverages	18.1%
Consumer Staples Distribution & Retail	36.5%
Food Products	15.6%
Household Products	17.9%
Personal Care Products	3.7%
Tobacco	8.0%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012219

Shareholder Report [Line Items]

Fund Name

Energy Index Fund

Class Name

ETF Shares

Trading Symbol

VDE

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Energy Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 9,597,000,000

Holdings Count | Holding

117

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$9,597
Number of Portfolio Holdings	117
Portfolio Turnover Rate	4%

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

(as of February 28, 2025)

Coal & Consumable Fuels	0.6%
Integrated Oil & Gas	38.3%
Oil & Gas Drilling	0.8%
Oil & Gas Equipment & Services	9.6%
Oil & Gas Exploration & Production	25.9%
Oil & Gas Refining & Marketing	8.2%
Oil & Gas Storage & Transportation	16.1%
Other Assets and Liabilities—Net	0.5%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012218

Shareholder Report [Line Items]

Fund Name

Energy Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VENAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Energy Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 9,597,000,000

Holdings Count | Holding

117

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$9,597
Number of Portfolio Holdings	117
Portfolio Turnover Rate	4%

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

(as of February 28, 2025)

Coal & Consumable Fuels	0.6%
Integrated Oil & Gas	38.3%
Oil & Gas Drilling	0.8%
Oil & Gas Equipment & Services	9.6%
Oil & Gas Exploration & Production	25.9%
Oil & Gas Refining & Marketing	8.2%
Oil & Gas Storage & Transportation	16.1%
Other Assets and Liabilities—Net	0.5%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012221

Shareholder Report [Line Items]

Fund Name

Financials Index Fund

Class Name

ETF Shares

Trading Symbol

VFH

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Financials Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 13,735,000,000

Holdings Count | Holding

412

InvestmentCompanyPortfolioTurnover

3.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$13,735
Number of Portfolio Holdings	412
Portfolio Turnover Rate	3%

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

(as of February 28, 2025)

Banks	26.9%
Capital Markets	23.6%
Consumer Finance	4.6%
Financial Services	25.1%
Insurance	16.2%
Mortgage Real Estate Investment Trusts (REITs)	0.7%
Other Assets and Liabilities—Net	2.9%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012220

Shareholder Report [Line Items]

Fund Name

Financials Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VFAIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Financials Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 13,735,000,000

Holdings Count | Holding

412

InvestmentCompanyPortfolioTurnover

3.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$13,735
Number of Portfolio Holdings	412
Portfolio Turnover Rate	3%

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

(as of February 28, 2025)

Banks	26.9%
Capital Markets	23.6%
Consumer Finance	4.6%
Financial Services	25.1%
Insurance	16.2%
Mortgage Real Estate Investment Trusts (REITs)	0.7%
Other Assets and Liabilities—Net	2.9%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012223

Shareholder Report [Line Items]

Fund Name

Health Care Index Fund

Class Name

ETF Shares

Trading Symbol

VHT

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Health Care Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 19,797,000,000

Holdings Count | Holding

423

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$19,797
Number of Portfolio Holdings	423
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Biotechnology	19.5%
Health Care Equipment & Supplies	21.8%
Health Care Providers & Services	18.9%
Health Care Technology	0.9%
Life Sciences Tools & Services	9.1%
Pharmaceuticals	27.3%
Other Assets and Liabilities—Net	2.5%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012222

Shareholder Report [Line Items]

Fund Name

Health Care Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VHCIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Health Care Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 19,797,000,000

Holdings Count | Holding

423

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$19,797
Number of Portfolio Holdings	423
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Biotechnology	19.5%
Health Care Equipment & Supplies	21.8%
Health Care Providers & Services	18.9%
Health Care Technology	0.9%
Life Sciences Tools & Services	9.1%
Pharmaceuticals	27.3%
Other Assets and Liabilities—Net	2.5%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012225

Shareholder Report [Line Items]

Fund Name

Industrials Index Fund

Class Name

ETF Shares

Trading Symbol

VIS

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Industrials Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 5,975,000,000

Holdings Count | Holding

389

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$5,975
Number of Portfolio Holdings	389
Portfolio Turnover Rate	2%

Holdings [Text Block]

This table reflects the Fund's investments, including short-term investments and other assets and liabilities.

Portfolio Composition % of Net Assets

(as of February 28, 2025)

Aerospace & Defense	20.0%
Air Freight & Logistics	3.4%
Building Products	6.8%
Commercial Services & Supplies	8.0%
Construction & Engineering	2.8%
Electrical Equipment	8.8%
Ground Transportation	9.6%
Industrial Conglomerates	4.1%
Machinery	19.7%
Marine Transportation	0.2%
Passenger Airlines	2.1%
Professional Services	9.3%
Trading Companies & Distributors	5.2%
Other Assets and Liabilities—Net	0.0%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012224

Shareholder Report [Line Items]

Fund Name

Industrials Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VINAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Industrials Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 5,975,000,000

Holdings Count | Holding

389

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$5,975
Number of Portfolio Holdings	389
Portfolio Turnover Rate	2%

Holdings [Text Block]

This table reflects the Fund's investments, including short-term investments and other assets and liabilities.

Portfolio Composition % of Net Assets

(as of February 28, 2025)

Aerospace & Defense	20.0%
Air Freight & Logistics	3.4%
Building Products	6.8%
Commercial Services & Supplies	8.0%
Construction & Engineering	2.8%
Electrical Equipment	8.8%
Ground Transportation	9.6%
Industrial Conglomerates	4.1%
Machinery	19.7%
Marine Transportation	0.2%
Passenger Airlines	2.1%
Professional Services	9.3%
Trading Companies & Distributors	5.2%
Other Assets and Liabilities—Net	0.0%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012227

Shareholder Report [Line Items]

Fund Name

Information Technology Index Fund

Class Name

ETF Shares

Trading Symbol

VGT

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Information Technology Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 97,323,000,000

Holdings Count | Holding

318

InvestmentCompanyPortfolioTurnover

3.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$97,323
Number of Portfolio Holdings	318
Portfolio Turnover Rate	3%

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

(as of February 28, 2025)

Communications Equipment	3.7%
Electronic Equipment, Instruments & Components	4.9%
IT Services	5.9%
Semiconductors & Semiconductor Equipment	30.9%
Software	34.8%
Technology Hardware, Storage & Peripherals	19.6%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012226

Shareholder Report [Line Items]

Fund Name

Information Technology Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VITAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Information Technology Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 97,323,000,000

Holdings Count | Holding

318

InvestmentCompanyPortfolioTurnover

3.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$97,323
Number of Portfolio Holdings	318
Portfolio Turnover Rate	3%

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

(as of February 28, 2025)

Communications Equipment	3.7%
Electronic Equipment, Instruments & Components	4.9%
IT Services	5.9%
Semiconductors & Semiconductor Equipment	30.9%
Software	34.8%
Technology Hardware, Storage & Peripherals	19.6%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012206

Shareholder Report [Line Items]

Fund Name

Materials Index Fund

Class Name

ETF Shares

Trading Symbol

VAW

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Materials Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 3,963,000,000

Holdings Count | Holding

120

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$3,963
Number of Portfolio Holdings	120
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Chemicals	57.0%
Construction Materials	10.8%
Containers & Packaging	13.0%
Metals & Mining	18.3%
Paper & Forest Products	0.8%
Other Assets and Liabilities—Net	0.1%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012205

Shareholder Report [Line Items]

Fund Name

Materials Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VMIAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Materials Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 3,963,000,000

Holdings Count | Holding

120

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$3,963
Number of Portfolio Holdings	120
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Chemicals	57.0%
Construction Materials	10.8%
Containers & Packaging	13.0%
Metals & Mining	18.3%
Paper & Forest Products	0.8%
Other Assets and Liabilities—Net	0.1%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012213

Shareholder Report [Line Items]

Fund Name

Utilities Index Fund

Class Name

ETF Shares

Trading Symbol

VPU

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Utilities Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 8,455,000,000

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$8,455
Number of Portfolio Holdings	73
Portfolio Turnover Rate	4%

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

(as of February 28, 2025)

Electric Utilities	61.7%
Gas Utilities	4.7%
Independent Power and Renewable Electricity Producers	5.3%
Multi-Utilities	24.5%
Water Utilities	3.4%
Other Assets and Liabilities—Net	0.4%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000012212

Shareholder Report [Line Items]

Fund Name

Utilities Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VUIAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Utilities Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$5	0.10%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 5

Expense Ratio, Percent

0.10%

AssetsNet

$ 8,455,000,000

Holdings Count | Holding

InvestmentCompanyPortfolioTurnover

4.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$8,455
Number of Portfolio Holdings	73
Portfolio Turnover Rate	4%

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

(as of February 28, 2025)

Electric Utilities	61.7%
Gas Utilities	4.7%
Independent Power and Renewable Electricity Producers	5.3%
Multi-Utilities	24.5%
Water Utilities	3.4%
Other Assets and Liabilities—Net	0.4%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000055210

Shareholder Report [Line Items]

Fund Name

Mega Cap Index Fund

Class Name

ETF Shares

Trading Symbol

MGC

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Mega Cap Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$4	0.07%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 4

Expense Ratio, Percent

0.07%

AssetsNet

$ 6,880,000,000

Holdings Count | Holding

200

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$6,880
Number of Portfolio Holdings	200
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Basic Materials	1.0%
Consumer Discretionary	14.9%
Consumer Staples	3.9%
Energy	2.9%
Financials	11.0%
Health Care	10.8%
Industrials	10.1%
Real Estate	1.0%
Technology	40.5%
Telecommunications	2.3%
Utilities	1.4%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000055209

Shareholder Report [Line Items]

Fund Name

Mega Cap Index Fund

Class Name

Institutional Shares

Trading Symbol

VMCTX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Mega Cap Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Shares	$3	0.06%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 3

Expense Ratio, Percent

0.06%

AssetsNet

$ 6,880,000,000

Holdings Count | Holding

200

InvestmentCompanyPortfolioTurnover

2.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$6,880
Number of Portfolio Holdings	200
Portfolio Turnover Rate	2%

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

(as of February 28, 2025)

Basic Materials	1.0%
Consumer Discretionary	14.9%
Consumer Staples	3.9%
Energy	2.9%
Financials	11.0%
Health Care	10.8%
Industrials	10.1%
Real Estate	1.0%
Technology	40.5%
Telecommunications	2.3%
Utilities	1.4%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000055213

Shareholder Report [Line Items]

Fund Name

Mega Cap Value Index Fund

Class Name

ETF Shares

Trading Symbol

MGV

Security Exchange Name

NYSE

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Mega Cap Value Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$4	0.07%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 4

Expense Ratio, Percent

0.07%

AssetsNet

$ 9,042,000,000

Holdings Count | Holding

141

InvestmentCompanyPortfolioTurnover

5.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$9,042
Number of Portfolio Holdings	141
Portfolio Turnover Rate	5%

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

(as of February 28, 2025)

Basic Materials	1.9%
Consumer Discretionary	7.9%
Consumer Staples	8.9%
Energy	6.8%
Financials	24.0%
Health Care	17.7%
Industrials	14.5%
Real Estate	1.2%
Technology	9.3%
Telecommunications	4.2%
Utilities	3.4%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

C000055212

Shareholder Report [Line Items]

Fund Name

Mega Cap Value Index Fund

Class Name

Institutional Shares

Trading Symbol

VMVLX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Mega Cap Value Index Fund (the "Fund") for the period of September 1, 2024, to February 28, 2025.

Shareholder Report Annual or Semi-Annual

Semi-Annual Shareholder Report

Additional Information [Text Block]

You can find additional information about the Fund at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature. You can also request this information by contacting us at 800-662-7447.

Additional Information Phone Number

800-662-7447

Additional Information Website

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Shares	$3	0.06%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 3

Expense Ratio, Percent

0.06%

AssetsNet

$ 9,042,000,000

Holdings Count | Holding

141

InvestmentCompanyPortfolioTurnover

5.00%

Additional Fund Statistics [Text Block]

Fund Statistics

(as of February 28, 2025)

Fund Net Assets (in millions)	$9,042
Number of Portfolio Holdings	141
Portfolio Turnover Rate	5%

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

(as of February 28, 2025)

Basic Materials	1.9%
Consumer Discretionary	7.9%
Consumer Staples	8.9%
Energy	6.8%
Financials	24.0%
Health Care	17.7%
Industrials	14.5%
Real Estate	1.2%
Technology	9.3%
Telecommunications	4.2%
Utilities	3.4%
Other Assets and Liabilities—Net	0.2%

Material Fund Change [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature