This semi-annual shareholder report contains important information about Vanguard Total International Bond Index Fund (the "Fund") for the period of November 1, 2025, to April 30, 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.

Material Fund Change Notice [Text Block]

The report describes changes to the Fund that occurred during the reporting period.

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	$6	0.13%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 6

Expense Ratio, Percent

^[1]

0.13%

Material Change Date

Oct. 31, 2025

AssetsNet

$ 118,140,000,000

Holdings Count | Holding

7,530

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of April 30, 2026)

Table Summary
Fund Net Assets (in millions)	$118,140
Number of Portfolio Holdings	7,530
Portfolio Turnover Rate	11%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of April 30, 2026)

Table Summary
Africa	0.0%
Asia	18.4%
Europe	63.6%
North America	11.3%
Oceania	4.2%
South America	0.4%
Other Assets and Liabilities—Net	2.1%

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

Material Fund Change [Text Block]

How has the Fund changed?

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

This is a summary of certain changes to the Fund since October 31, 2025. For more complete information, you may review the Fund’s prospectus, at https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature or upon request at 800-662-7447.

Material Fund Change Adviser [Text Block]

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

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

C000109503

Shareholder Report [Line Items]

Fund Name

Total International Bond Index Fund

Class Name

ETF Shares

Trading Symbol

BNDX

Security Exchange Name

NASDAQ

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Total International Bond Index Fund (the "Fund") for the period of November 1, 2025, to April 30, 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.

Material Fund Change Notice [Text Block]

The report describes changes to the Fund that occurred during the reporting period.

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	$3	0.07%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 3

Expense Ratio, Percent

^[2]

0.07%

Material Change Date

Oct. 31, 2025

AssetsNet

$ 118,140,000,000

Holdings Count | Holding

7,530

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of April 30, 2026)

Table Summary
Fund Net Assets (in millions)	$118,140
Number of Portfolio Holdings	7,530
Portfolio Turnover Rate	11%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of April 30, 2026)

Table Summary
Africa	0.0%
Asia	18.4%
Europe	63.6%
North America	11.3%
Oceania	4.2%
South America	0.4%
Other Assets and Liabilities—Net	2.1%

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

Material Fund Change [Text Block]

How has the Fund changed?

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Material Fund Change Adviser [Text Block]

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

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

C000109501

Shareholder Report [Line Items]

Fund Name

Total International Bond Index Fund

Class Name

Admiral™ Shares

Trading Symbol

VTABX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Total International Bond Index Fund (the "Fund") for the period of November 1, 2025, to April 30, 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.

Material Fund Change Notice [Text Block]

The report describes changes to the Fund that occurred during the reporting period.

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

^[3]

0.10%

Material Change Date

Oct. 31, 2025

AssetsNet

$ 118,140,000,000

Holdings Count | Holding

7,530

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of April 30, 2026)

Table Summary
Fund Net Assets (in millions)	$118,140
Number of Portfolio Holdings	7,530
Portfolio Turnover Rate	11%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of April 30, 2026)

Table Summary
Africa	0.0%
Asia	18.4%
Europe	63.6%
North America	11.3%
Oceania	4.2%
South America	0.4%
Other Assets and Liabilities—Net	2.1%

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

Material Fund Change [Text Block]

How has the Fund changed?

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Material Fund Change Adviser [Text Block]

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

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

C000109502

Shareholder Report [Line Items]

Fund Name

Total International Bond Index Fund

Class Name

Institutional Shares

Trading Symbol

VTIFX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Total International Bond Index Fund (the "Fund") for the period of November 1, 2025, to April 30, 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.

Material Fund Change Notice [Text Block]

The report describes changes to the Fund that occurred during the reporting period.

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	$2	0.05%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 2

Expense Ratio, Percent

^[4]

0.05%

Material Change Date

Oct. 31, 2025

AssetsNet

$ 118,140,000,000

Holdings Count | Holding

7,530

InvestmentCompanyPortfolioTurnover

11.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of April 30, 2026)

Table Summary
Fund Net Assets (in millions)	$118,140
Number of Portfolio Holdings	7,530
Portfolio Turnover Rate	11%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of April 30, 2026)

Table Summary
Africa	0.0%
Asia	18.4%
Europe	63.6%
North America	11.3%
Oceania	4.2%
South America	0.4%
Other Assets and Liabilities—Net	2.1%

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

Material Fund Change [Text Block]

How has the Fund changed?

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Material Fund Change Adviser [Text Block]

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

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

C000217896

Shareholder Report [Line Items]

Fund Name

Total International Bond II Index Fund

Class Name

Investor Shares

Trading Symbol

VTIIX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Total International Bond II Index Fund (the "Fund") for the period of November 1, 2025, to April 30, 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.

Material Fund Change Notice [Text Block]

The report describes changes to the Fund that occurred during the reporting period.

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	$6	0.12%^{Footnote Reference1}

Footnote	Description
Footnote¹	Annualized.

Expenses Paid, Amount

$ 6

Expense Ratio, Percent

^[5]

0.12%

Material Change Date

Oct. 31, 2025

AssetsNet

$ 145,698,000,000

Holdings Count | Holding

7,947

InvestmentCompanyPortfolioTurnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of April 30, 2026)

Table Summary
Fund Net Assets (in millions)	$145,698
Number of Portfolio Holdings	7,947
Portfolio Turnover Rate	10%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of April 30, 2026)

Table Summary
Africa	0.0%
Asia	18.2%
Europe	63.2%
North America	11.3%
Oceania	4.1%
South America	0.4%
Other Assets and Liabilities—Net	2.8%

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

Material Fund Change [Text Block]

How has the Fund changed?

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Material Fund Change Adviser [Text Block]

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Summary of Change Legend [Text Block]

Updated Prospectus Phone Number

800-662-7447

Updated Prospectus Web Address

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

C000217897

Shareholder Report [Line Items]

Fund Name

Total International Bond II Index Fund

Class Name

Institutional Shares

Trading Symbol

VTILX

Annual or Semi-Annual Statement [Text Block]

This semi-annual shareholder report contains important information about Vanguard Total International Bond II Index Fund (the "Fund") for the period of November 1, 2025, to April 30, 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.

Material Fund Change Notice [Text Block]

The report describes changes to the Fund that occurred during the reporting period.

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

^[6]

0.07%

Material Change Date

Oct. 31, 2025

AssetsNet

$ 145,698,000,000

Holdings Count | Holding

7,947

InvestmentCompanyPortfolioTurnover

10.00%

Additional Fund Statistics [Text Block]

Fund Statistics (as of April 30, 2026)

Table Summary
Fund Net Assets (in millions)	$145,698
Number of Portfolio Holdings	7,947
Portfolio Turnover Rate	10%

Holdings [Text Block]

Portfolio Composition % of Net Assets (as of April 30, 2026)

Table Summary
Africa	0.0%
Asia	18.2%
Europe	63.2%
North America	11.3%
Oceania	4.1%
South America	0.4%
Other Assets and Liabilities—Net	2.8%

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

Material Fund Change [Text Block]

How has the Fund changed?

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Material Fund Change Adviser [Text Block]

Effective January 12, 2026, The Vanguard Group, Inc. exercises portfolio management responsibilities for the fund through its wholly-owned subsidiary, Vanguard Capital Management, LLC.

Summary of Change Legend [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.