This semi-annual shareholder report contains important information about Vanguard Short-Term Treasury Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

<span style="white-space: nowrap; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto;"> <span style="box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: collapse;"><span style="text-decoration: underline; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 10.6667px; font-weight: 400; grid-area: auto; line-height: 16px; margin: 0px; overflow: visible; text-align: left; text-align-last: auto; white-space-collapse: collapse;">https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature</span></span></span>

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[1]

AssetsNet

$ 5,761,000,000

Holdings Count | Holding

300

InvestmentCompanyPortfolioTurnover

353.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$5,761
Number of Portfolio Holdings	300
Portfolio Turnover Rate	353%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Asset-Backed/Commercial Mortgage-Backed Securities	1.5%
Conventional Mortgage-Backed Securities	8.2%
Nonconventional Mortgage-Backed Securities	8.4%
U.S. Government Securities	81.1%
Other Assets and Liabilities—Net^{Footnote Reference}	0.8%

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

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

C000007090

Shareholder Report [Line Items]

Fund Name

Short-Term Treasury Fund

Class Name

Admiral™ Shares

Trading Symbol

VFIRX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Short-Term Treasury Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
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%

^[2]

AssetsNet

$ 5,761,000,000

Holdings Count | Holding

300

InvestmentCompanyPortfolioTurnover

353.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$5,761
Number of Portfolio Holdings	300
Portfolio Turnover Rate	353%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Asset-Backed/Commercial Mortgage-Backed Securities	1.5%
Conventional Mortgage-Backed Securities	8.2%
Nonconventional Mortgage-Backed Securities	8.4%
U.S. Government Securities	81.1%
Other Assets and Liabilities—Net^{Footnote Reference}	0.8%

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

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

C000007092

Shareholder Report [Line Items]

Fund Name

High-Yield Corporate Fund

Class Name

Investor Shares

Trading Symbol

VWEHX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard High-Yield Corporate Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$11	0.22%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 11

Expense Ratio, Percent

0.22%

^[3]

AssetsNet

$ 25,654,000,000

Holdings Count | Holding

1,063

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$25,654
Number of Portfolio Holdings	1,063
Portfolio Turnover Rate	21%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	13.4%
Consumer Discretionary	15.7%
Consumer Staples	3.4%
Energy	10.5%
Financials	9.2%
Health Care	7.1%
Industrials	7.0%
Materials	9.4%
Real Estate	2.0%
Technology	5.8%
Utilities	2.2%
Other	9.7%
Other Assets and Liabilities—Net^{Footnote Reference}	4.6%

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

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

C000007093

Shareholder Report [Line Items]

Fund Name

High-Yield Corporate Fund

Class Name

Admiral™ Shares

Trading Symbol

VWEAX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard High-Yield Corporate Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$6	0.12%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 6

Expense Ratio, Percent

0.12%

^[4]

AssetsNet

$ 25,654,000,000

Holdings Count | Holding

1,063

InvestmentCompanyPortfolioTurnover

21.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$25,654
Number of Portfolio Holdings	1,063
Portfolio Turnover Rate	21%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	13.4%
Consumer Discretionary	15.7%
Consumer Staples	3.4%
Energy	10.5%
Financials	9.2%
Health Care	7.1%
Industrials	7.0%
Materials	9.4%
Real Estate	2.0%
Technology	5.8%
Utilities	2.2%
Other	9.7%
Other Assets and Liabilities—Net^{Footnote Reference}	4.6%

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

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

C000007097

Shareholder Report [Line Items]

Fund Name

Intermediate-Term Investment-Grade Fund

Class Name

Investor Shares

Trading Symbol

VFICX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Investment-Grade Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[5]

AssetsNet

$ 38,880,000,000

Holdings Count | Holding

1,821

InvestmentCompanyPortfolioTurnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$38,880
Number of Portfolio Holdings	1,821
Portfolio Turnover Rate	40%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	6.8%
Consumer Discretionary	4.4%
Consumer Staples	3.9%
Energy	6.5%
Financials	29.4%
Health Care	7.3%
Industrials	4.5%
Materials	2.7%
Real Estate	3.4%
Technology	6.7%
Utilities	8.4%
Other	14.6%
Other Assets and Liabilities—Net^{Footnote Reference}	1.4%

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

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

C000007098

Shareholder Report [Line Items]

Fund Name

Intermediate-Term Investment-Grade Fund

Class Name

Admiral™ Shares

Trading Symbol

VFIDX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Investment-Grade Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$4	0.09%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 4

Expense Ratio, Percent

0.09%

^[6]

AssetsNet

$ 38,880,000,000

Holdings Count | Holding

1,821

InvestmentCompanyPortfolioTurnover

40.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$38,880
Number of Portfolio Holdings	1,821
Portfolio Turnover Rate	40%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	6.8%
Consumer Discretionary	4.4%
Consumer Staples	3.9%
Energy	6.5%
Financials	29.4%
Health Care	7.3%
Industrials	4.5%
Materials	2.7%
Real Estate	3.4%
Technology	6.7%
Utilities	8.4%
Other	14.6%
Other Assets and Liabilities—Net^{Footnote Reference}	1.4%

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

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

C000007099

Shareholder Report [Line Items]

Fund Name

Intermediate-Term Treasury Fund

Class Name

Investor Shares

Trading Symbol

VFITX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Treasury Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[7]

AssetsNet

$ 7,144,000,000

Holdings Count | Holding

342

InvestmentCompanyPortfolioTurnover

129.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$7,144
Number of Portfolio Holdings	342
Portfolio Turnover Rate	129%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Agency Bonds and Notes	0.6%
Asset-Backed/Commercial Mortgage-Backed Securities	0.9%
Conventional Mortgage-Backed Securities	7.5%
Nonconventional Mortgage-Backed Securities	9.2%
U.S. Government Securities	80.5%
Other Assets and Liabilities—Net^{Footnote Reference}	1.3%

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

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

C000007100

Shareholder Report [Line Items]

Fund Name

Intermediate-Term Treasury Fund

Class Name

Admiral™ Shares

Trading Symbol

VFIUX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Intermediate-Term Treasury Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
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%

^[8]

AssetsNet

$ 7,144,000,000

Holdings Count | Holding

342

InvestmentCompanyPortfolioTurnover

129.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$7,144
Number of Portfolio Holdings	342
Portfolio Turnover Rate	129%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Agency Bonds and Notes	0.6%
Asset-Backed/Commercial Mortgage-Backed Securities	0.9%
Conventional Mortgage-Backed Securities	7.5%
Nonconventional Mortgage-Backed Securities	9.2%
U.S. Government Securities	80.5%
Other Assets and Liabilities—Net^{Footnote Reference}	1.3%

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

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

C000007101

Shareholder Report [Line Items]

Fund Name

Long-Term Investment-Grade Fund

Class Name

Investor Shares

Trading Symbol

VWESX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Long-Term Investment-Grade Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.21%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.21%

^[9]

AssetsNet

$ 9,696,000,000

Holdings Count | Holding

1,325

InvestmentCompanyPortfolioTurnover

33.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$9,696
Number of Portfolio Holdings	1,325
Portfolio Turnover Rate	33%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	7.2%
Consumer Discretionary	5.2%
Consumer Staples	4.3%
Energy	6.1%
Financials	16.2%
Health Care	12.6%
Industrials	6.1%
Materials	1.2%
Real Estate	0.5%
Technology	4.8%
Utilities	15.5%
Other	17.4%
Other Assets and Liabilities—Net^{Footnote Reference}	2.9%

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

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

C000007102

Shareholder Report [Line Items]

Fund Name

Long-Term Investment-Grade Fund

Class Name

Admiral™ Shares

Trading Symbol

VWETX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Long-Term Investment-Grade Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
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%

^[10]

AssetsNet

$ 9,696,000,000

Holdings Count | Holding

1,325

InvestmentCompanyPortfolioTurnover

33.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$9,696
Number of Portfolio Holdings	1,325
Portfolio Turnover Rate	33%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	7.2%
Consumer Discretionary	5.2%
Consumer Staples	4.3%
Energy	6.1%
Financials	16.2%
Health Care	12.6%
Industrials	6.1%
Materials	1.2%
Real Estate	0.5%
Technology	4.8%
Utilities	15.5%
Other	17.4%
Other Assets and Liabilities—Net^{Footnote Reference}	2.9%

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

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

C000007103

Shareholder Report [Line Items]

Fund Name

Long-Term Treasury Fund

Class Name

Investor Shares

Trading Symbol

VUSTX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Long-Term Treasury Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[11]

AssetsNet

$ 2,711,000,000

Holdings Count | Holding

199

InvestmentCompanyPortfolioTurnover

161.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$2,711
Number of Portfolio Holdings	199
Portfolio Turnover Rate	161%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Agency Bonds and Notes	1.3%
Asset-Backed/Commercial Mortgage-Backed Securities	0.0%
Conventional Mortgage-Backed Securities	4.8%
Nonconventional Mortgage-Backed Securities	4.8%
U.S. Government Securities	87.3%
Other Assets and Liabilities—Net^{Footnote Reference}	1.8%

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

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

C000007104

Shareholder Report [Line Items]

Fund Name

Long-Term Treasury Fund

Class Name

Admiral™ Shares

Trading Symbol

VUSUX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Long-Term Treasury Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
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%

^[12]

AssetsNet

$ 2,711,000,000

Holdings Count | Holding

199

InvestmentCompanyPortfolioTurnover

161.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$2,711
Number of Portfolio Holdings	199
Portfolio Turnover Rate	161%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Agency Bonds and Notes	1.3%
Asset-Backed/Commercial Mortgage-Backed Securities	0.0%
Conventional Mortgage-Backed Securities	4.8%
Nonconventional Mortgage-Backed Securities	4.8%
U.S. Government Securities	87.3%
Other Assets and Liabilities—Net^{Footnote Reference}	1.8%

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

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

C000007105

Shareholder Report [Line Items]

Fund Name

Short-Term Government Securities Active Fund

Class Name

Investor Shares

Trading Symbol

VSGBX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Short-Term Government Securities Active Fund (the "Fund") (formerly known as Vanguard Short-Term Federal Fund) for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[13]

AssetsNet

$ 4,445,000,000

Holdings Count | Holding

411

InvestmentCompanyPortfolioTurnover

232.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$4,445
Number of Portfolio Holdings	411
Portfolio Turnover Rate	232%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Agency Bonds and Notes	2.6%
Asset-Backed/Commercial Mortgage-Backed Securities	17.4%
Conventional Mortgage-Backed Securities	24.3%
Nonconventional Mortgage-Backed Securities	23.2%
U.S. Government Securities	31.4%
Other Assets and Liabilities—Net^{Footnote Reference}	1.1%

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

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

C000007106

Shareholder Report [Line Items]

Fund Name

Short-Term Government Securities Active Fund

Class Name

Admiral™ Shares

Trading Symbol

VSGDX

Annual or Semi-Annual Statement [Text Block]

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
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%

^[14]

AssetsNet

$ 4,445,000,000

Holdings Count | Holding

411

InvestmentCompanyPortfolioTurnover

232.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$4,445
Number of Portfolio Holdings	411
Portfolio Turnover Rate	232%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Agency Bonds and Notes	2.6%
Asset-Backed/Commercial Mortgage-Backed Securities	17.4%
Conventional Mortgage-Backed Securities	24.3%
Nonconventional Mortgage-Backed Securities	23.2%
U.S. Government Securities	31.4%
Other Assets and Liabilities—Net^{Footnote Reference}	1.1%

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

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

C000007107

Shareholder Report [Line Items]

Fund Name

Short-Term Investment-Grade Fund

Class Name

Investor Shares

Trading Symbol

VFSTX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Short-Term Investment-Grade Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[15]

AssetsNet

$ 55,362,000,000

Holdings Count | Holding

2,423

InvestmentCompanyPortfolioTurnover

41.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$55,362
Number of Portfolio Holdings	2,423
Portfolio Turnover Rate	41%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	5.0%
Consumer Discretionary	5.1%
Consumer Staples	3.8%
Energy	5.6%
Financials	29.0%
Health Care	7.0%
Industrials	5.4%
Materials	2.2%
Real Estate	2.8%
Technology	6.0%
Utilities	6.5%
Other	20.9%
Other Assets and Liabilities—Net^{Footnote Reference}	0.7%

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

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

C000007108

Shareholder Report [Line Items]

Fund Name

Short-Term Investment-Grade Fund

Class Name

Admiral™ Shares

Trading Symbol

VFSUX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Short-Term Investment-Grade Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$4	0.09%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 4

Expense Ratio, Percent

0.09%

^[16]

AssetsNet

$ 55,362,000,000

Holdings Count | Holding

2,423

InvestmentCompanyPortfolioTurnover

41.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$55,362
Number of Portfolio Holdings	2,423
Portfolio Turnover Rate	41%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	5.0%
Consumer Discretionary	5.1%
Consumer Staples	3.8%
Energy	5.6%
Financials	29.0%
Health Care	7.0%
Industrials	5.4%
Materials	2.2%
Real Estate	2.8%
Technology	6.0%
Utilities	6.5%
Other	20.9%
Other Assets and Liabilities—Net^{Footnote Reference}	0.7%

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

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

C000007109

Shareholder Report [Line Items]

Fund Name

Short-Term Investment-Grade Fund

Class Name

Institutional Shares

Trading Symbol

VFSIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Short-Term Investment-Grade Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Institutional Shares	$3	0.07%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 3

Expense Ratio, Percent

0.07%

^[17]

AssetsNet

$ 55,362,000,000

Holdings Count | Holding

2,423

InvestmentCompanyPortfolioTurnover

41.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$55,362
Number of Portfolio Holdings	2,423
Portfolio Turnover Rate	41%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	5.0%
Consumer Discretionary	5.1%
Consumer Staples	3.8%
Energy	5.6%
Financials	29.0%
Health Care	7.0%
Industrials	5.4%
Materials	2.2%
Real Estate	2.8%
Technology	6.0%
Utilities	6.5%
Other	20.9%
Other Assets and Liabilities—Net^{Footnote Reference}	0.7%

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

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

C000151976

Shareholder Report [Line Items]

Fund Name

Ultra-Short-Term Bond Fund

Class Name

Investor Shares

Trading Symbol

VUBFX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Ultra-Short-Term Bond Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Investor Shares	$10	0.20%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 10

Expense Ratio, Percent

0.20%

^[18]

AssetsNet

$ 15,865,000,000

Holdings Count | Holding

1,050

InvestmentCompanyPortfolioTurnover

33.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$15,865
Number of Portfolio Holdings	1,050
Portfolio Turnover Rate	33%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Asset-Backed/Commercial Mortgage-Backed Securities	30.3%
Corporate Bonds	58.0%
Sovereign Bonds	3.3%
U.S. Government and Agency Obligations	1.4%
Other Assets and Liabilities—Net^{Footnote Reference}	7.0%

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

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

C000151975

Shareholder Report [Line Items]

Fund Name

Ultra-Short-Term Bond Fund

Class Name

Admiral™ Shares

Trading Symbol

VUSFX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Ultra-Short-Term Bond Fund (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
Admiral Shares	$4	0.09%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 4

Expense Ratio, Percent

0.09%

^[19]

AssetsNet

$ 15,865,000,000

Holdings Count | Holding

1,050

InvestmentCompanyPortfolioTurnover

33.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$15,865
Number of Portfolio Holdings	1,050
Portfolio Turnover Rate	33%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Asset-Backed/Commercial Mortgage-Backed Securities	30.3%
Corporate Bonds	58.0%
Sovereign Bonds	3.3%
U.S. Government and Agency Obligations	1.4%
Other Assets and Liabilities—Net^{Footnote Reference}	7.0%

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

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

C000264003

Shareholder Report [Line Items]

Fund Name

High-Yield Active ETF

Class Name

ETF Shares

Trading Symbol

VGHY

Security Exchange Name

CboeBZX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard High-Yield Active ETF (the "Fund") for the period of February 1, 2026, to July 31, 2026.

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

Additional Information Website

Expenses [Text Block]

What were the Fund costs for the last six months?

(based on a hypothetical $10,000 investment)

Table Summary
Share Class Name	Costs of a $10,000 investment	Costs paid as a percentage of a $10,000 investment
ETF Shares	$11	0.22%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 11

Expense Ratio, Percent

0.22%

^[20]

AssetsNet

$ 307,000,000

Holdings Count | Holding

599

InvestmentCompanyPortfolioTurnover

28.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of July 31, 2026)

Table Summary
Fund Net Assets (in millions)	$307
Number of Portfolio Holdings	599
Portfolio Turnover Rate	28%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of July 31, 2026)

Table Summary
Communications	12.0%
Consumer Discretionary	16.3%
Consumer Staples	4.7%
Energy	9.9%
Financials	8.5%
Health Care	7.5%
Industrials	7.5%
Materials	10.6%
Real Estate	2.8%
Technology	3.4%
Utilities	3.4%
Other	12.5%
Other Assets and Liabilities—Net^{Footnote Reference}	0.9%

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

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

[1]	Annualized.
[2]	Annualized.
[3]	Annualized.
[4]	Annualized.
[5]	Annualized.
[6]	Annualized.
[7]	Annualized.
[8]	Annualized.
[9]	Annualized.
[10]	Annualized.
[11]	Annualized.
[12]	Annualized.
[13]	Annualized.
[14]	Annualized.
[15]	Annualized.
[16]	Annualized.
[17]	Annualized.
[18]	Annualized.
[19]	Annualized.
[20]	Annualized.