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Shareholder Report
 6 Months Ended
Apr. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name Vanguard Trustees’ Equity Fund
Entity Central Index Key 0000313850
Entity Investment Company Type N-1A
Document Period End Date Apr. 30, 2026
C000012145 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard International Value Fund
Class Name Investor Shares
Trading Symbol VTRIX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard International Value Fund (the "Fund") for the period of November 1, 2025, to April 30, 2026.
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.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last 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 $18 0.34%1
​1
Annualized.
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.34% [1]
Net Assets $ 11,322,000,000
Holdings Count | Holding 194
Investment Company Portfolio Turnover 23.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of April 30, 2026)
Fund Net Assets
(in millions)		 $11,322
Number of Portfolio Holdings 194
Portfolio Turnover Rate 23%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of April 30, 2026)
Asia 35.4%
Europe 47.4%
North America 9.3%
Oceania 1.4%
South America 1.8%
Other Assets and Liabilities—Net 4.7%
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 through its wholly-owned subsidiaries, Vanguard Capital Management, LLC and Vanguard Portfolio 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.
Summary of Change Legend [Text Block]
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.
Updated Prospectus Phone Number 800-662-7447
Updated Prospectus Web Address https://personal1.vanguard.com/ngf-next-gen-form-webapp/fund-literature
C000032457 [Member]  
Shareholder Report [Line Items]  
Fund Name Vanguard Diversified Equity Fund
Class Name Investor Shares
Trading Symbol VDEQX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about Vanguard Diversified Equity Fund (the "Fund") for the period of November 1, 2025, to April 30, 2026.
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.
Material Fund Change Notice [Text Block] The report describes changes to the Fund that occurred during the reporting period.
Additional Information Phone Number 800-662-7447
Additional Information Website https://personal1.vanguard.com/ngf‑next‑gen‑form‑webapp/fund‑literature
Expenses [Text Block]
What were the Fund costs for the last 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 $18 0.35%1
​1
Annualized.
Expenses Paid, Amount $ 18
Expense Ratio, Percent 0.35% [2]
Net Assets $ 2,927,000,000
Holdings Count | Holding 7
Investment Company Portfolio Turnover 6.00%
Additional Fund Statistics [Text Block]
Fund Statistics
(as of April 30, 2026)
Fund Net Assets
(in millions)		 $2,927
Number of Portfolio Holdings 7
Portfolio Turnover Rate 6%
Holdings [Text Block]
Portfolio Composition % of Net Assets
(as of April 30, 2026)
Vanguard U.S. Growth Fund Investor Shares 29.7%
Vanguard Growth and Income Fund Investor Shares 20.1%
Vanguard WindsorTM Fund Investor Shares 20.1%
Vanguard Windsor II Fund Investor Shares 15.1%
Vanguard ExplorerTM Fund Investor Shares 10.3%
Vanguard Mid-Cap Growth Fund 4.8%
Other Assets and Liabilities—Net (0.1%)
This table reflects the Fund’s investments, including short-term investments 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.
Summary of Change Legend [Text Block]
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.
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.