<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2026"
  xmlns:fnd="http://xbrl.sec.gov/fnd/2026"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:oef="http://xbrl.sec.gov/oef/2026"
  xmlns:world="http://www.vanguard.com/20250831"
  xmlns:xbrldi="http://xbrl.org/2006/xbrldi"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="world-20250831.xsd" xlink:type="simple"/>
    <context id="D_31Aug2025_31Aug2025">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000052848</identifier>
        </entity>
        <period>
            <startDate>2025-08-31</startDate>
            <endDate>2025-08-31</endDate>
        </period>
    </context>
    <context id="S000004444">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000052848</identifier>
            <segment>
                <xbrldi:explicitMember dimension="dei:LegalEntityAxis">world:S000004444Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-08-31</startDate>
            <endDate>2025-08-31</endDate>
        </period>
    </context>
    <context id="S000004453">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000052848</identifier>
            <segment>
                <xbrldi:explicitMember dimension="dei:LegalEntityAxis">world:S000004453Member</xbrldi:explicitMember>
            </segment>
        </entity>
        <period>
            <startDate>2025-08-31</startDate>
            <endDate>2025-08-31</endDate>
        </period>
    </context>
    <dei:DocumentPeriodEndDate contextRef="D_31Aug2025_31Aug2025" id="apid_1">2025-08-31</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="D_31Aug2025_31Aug2025" id="apid_2">VANGUARD WORLD FUND</dei:EntityRegistrantName>
    <dei:EntityCentralIndexKey contextRef="D_31Aug2025_31Aug2025" id="apid_3">0000052848</dei:EntityCentralIndexKey>
    <dei:AmendmentFlag contextRef="D_31Aug2025_31Aug2025" id="apid_4">false</dei:AmendmentFlag>
    <oef:ProspectusDate contextRef="D_31Aug2025_31Aug2025" id="apid_5">2025-12-19</oef:ProspectusDate>
    <dei:EntityInvCompanyType contextRef="D_31Aug2025_31Aug2025" id="apid_6">N-1A</dei:EntityInvCompanyType>
    <dei:DocumentType contextRef="D_31Aug2025_31Aug2025" id="apid_7">497</dei:DocumentType>
    <oef:SupplementToProspectusTextBlock
      contextRef="D_31Aug2025_31Aug2025"
      id="x_9f0d0de2-4b97-40a3-b7f8-02cfaf34fd6f">&lt;span style="color:#000000;font-family:Arial;font-size:14pt;font-weight:bold;"&gt;Vanguard U.S. Growth Fund&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:11pt;font-weight:bold;"&gt;Supplement Dated June 22, 2026, to the Prospectus and Summary Prospectus&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;"&gt;Important Changes to the Fund  &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;The board of trustees of Vanguard World Fund has approved amending the investment strategy for Vanguard U.S. Growth Fund (the &#x201c;Fund&#x201d;) effective on or about June 22, 2026. The investment objective of the Fund remains unchanged.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;"&gt;Prospectus and Summary Prospectus Text Changes&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;The following replaces the language under the &#x201c;Principal Investment Strategies&#x201d; heading in the &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;font-weight:bold;"&gt;Fund Summary &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;section:&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;The Fund employs an active management approach, investing mainly in large-capitalization stocks of U.S. companies considered to have above-average earnings growth potential and reasonable stock prices in comparison with expected earnings. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;Under normal circumstances, the Fund &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in U.S. growth securities.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt; For purposes of the 80% policy, &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;U.S. growth securities are equity securities that (i) are issued by a U.S. company and (ii) are included within at least one of the following growth indices or a growth index determined by the advisor to be similar to the foregoing: Russell 3000 Growth Index, S&amp;amp;P 500 Growth Index, S&amp;amp;P MidCap 400 Growth Index, S&amp;amp;P SmallCap 600 Growth Index, CRSP U.S. Mega Cap Growth Index, CRSP U.S. Large Cap Growth Index, CRSP U.S. Mid Cap Growth Index, CRSP U.S. Small Cap Growth Index, MSCI U.S. Prime Market Growth Index, MSCI U.S. Small Cap Growth Index, MSCI All Country World Growth Index, or FTSE All-World Growth Index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt; A U.S. company is a company organized under the &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;laws of the United States, that maintain their principal place of business in the United States, whose primary country of risk is the United States, or that have their primary listing in the United States.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;line-height:11.5pt;"&gt;The Fund has multiple investment advisors, each of which independently selects and maintains a portfolio of common stocks for the Fund.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;line-height:11.5pt;"&gt;The Fund is considered nondiversified, as defined under the Investment Company Act of 1940, which means that it may invest a greater percentage of its assets in the securities of particular issuers as compared with diversified funds.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:14pt;font-weight:bold;"&gt;Vanguard International Growth Fund&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:11pt;font-weight:bold;"&gt;Supplement Dated June 22, 2026, to the Prospectus and Summary Prospectus&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;"&gt;Important Changes to the Fund  &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;The board of trustees of Vanguard World Fund has approved amending the investment strategy for Vanguard International Growth Fund (the &#x201c;Fund&#x201d;) effective on or about June 22, 2026. The investment objective of the Fund remains unchanged.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;"&gt;Prospectus and Summary Prospectus Text Changes&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;The following replaces the language under the &#x201c;Principal Investment Strategies&#x201d; heading in the &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;font-weight:bold;"&gt;Fund Summary &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;section:&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;The Fund employs an active management approach, investing mainly in stocks of companies located outside the United States. &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;Under normal circumstances, &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in growth stocks.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt; For purposes of the 80% &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;policy, a growth stock is a stock that is included within at least one of the following growth indices or a growth index determined by the advisor to be similar to the foregoing: Russell 3000 Growth Index, S&amp;amp;P 500 Growth Index, S&amp;amp;P MidCap 400 Growth Index, S&amp;amp;P SmallCap 600 Growth Index, CRSP U.S. Mega Cap Growth Index, CRSP U.S. Large Cap Growth Index, CRSP U.S. Mid Cap Growth Index, CRSP U.S. Small Cap Growth Index, MSCI U.S. Prime Market Growth Index, MSCI U.S. Small Cap Growth Index, MSCI All Country World Growth Index, or FTSE All-World Growth Index.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;line-height:11.5pt;"&gt;The Fund is expected to diversify its assets in countries across developed and emerging markets. In selecting stocks, the Fund&#x2019;s advisors evaluate foreign markets around the world and choose large-, mid-, and small-capitalization companies considered to have above-average earnings growth potential.&lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;line-height:11.5pt;"&gt; The &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;line-height:11.5pt;"&gt;Fund has multiple investment advisors, each of which independently selects and maintains a portfolio of common stocks for the Fund.&lt;/span&gt;</oef:SupplementToProspectusTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="S000004444"
      id="x_017a80c0-89f3-4cd1-a725-0d78d88b769e">&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;Under normal circumstances, the Fund &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in U.S. growth securities.&lt;/span&gt;</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermSlctnCritSmryTextBlock
      contextRef="S000004444"
      id="b8bb2747-f578-4724-a56f-cfae04bd046b">&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt; For purposes of the 80% policy, &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;U.S. growth securities are equity securities that (i) are issued by a U.S. company and (ii) are included within at least one of the following growth indices or a growth index determined by the advisor to be similar to the foregoing: Russell 3000 Growth Index, S&amp;amp;P 500 Growth Index, S&amp;amp;P MidCap 400 Growth Index, S&amp;amp;P SmallCap 600 Growth Index, CRSP U.S. Mega Cap Growth Index, CRSP U.S. Large Cap Growth Index, CRSP U.S. Mid Cap Growth Index, CRSP U.S. Small Cap Growth Index, MSCI U.S. Prime Market Growth Index, MSCI U.S. Small Cap Growth Index, MSCI All Country World Growth Index, or FTSE All-World Growth Index.&lt;/span&gt;</fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <fnd:NmRule35d1TermDfnSmryTextBlock
      contextRef="S000004444"
      id="x_4fab2ca7-d0b8-439d-9bc8-ea64a4dc6429">&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt; A U.S. company is a company organized under the &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;laws of the United States, that maintain their principal place of business in the United States, whose primary country of risk is the United States, or that have their primary listing in the United States.&lt;/span&gt;</fnd:NmRule35d1TermDfnSmryTextBlock>
    <fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock
      contextRef="S000004453"
      id="f6b0d17f-632f-4013-b6f9-9276f6d4ad2d">&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;Under normal circumstances, &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;the Fund invests at least 80% of its net assets, plus the amount of any borrowings for investment purposes, in growth stocks.&lt;/span&gt;</fnd:NmRule35d1EightyPctInvstmntPlcyTextBlock>
    <fnd:NmRule35d1TermSlctnCritSmryTextBlock
      contextRef="S000004453"
      id="ebd4f2b0-def6-49a3-8d23-fdaecf592664">&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt; For purposes of the 80% &lt;/span&gt;&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;"&gt;policy, a growth stock is a stock that is included within at least one of the following growth indices or a growth index determined by the advisor to be similar to the foregoing: Russell 3000 Growth Index, S&amp;amp;P 500 Growth Index, S&amp;amp;P MidCap 400 Growth Index, S&amp;amp;P SmallCap 600 Growth Index, CRSP U.S. Mega Cap Growth Index, CRSP U.S. Large Cap Growth Index, CRSP U.S. Mid Cap Growth Index, CRSP U.S. Small Cap Growth Index, MSCI U.S. Prime Market Growth Index, MSCI U.S. Small Cap Growth Index, MSCI All Country World Growth Index, or FTSE All-World Growth Index.&lt;/span&gt;</fnd:NmRule35d1TermSlctnCritSmryTextBlock>
    <fnd:NmRule35d1TermDfnSmryTextBlock
      contextRef="S000004453"
      id="x_69e3c44f-aa3d-4727-8aad-a8516691bb70">&lt;span style="color:#000000;font-family:Arial;font-size:9.5pt;line-height:11.5pt;"&gt;The Fund is expected to diversify its assets in countries across developed and emerging markets. In selecting stocks, the Fund&#x2019;s advisors evaluate foreign markets around the world and choose large-, mid-, and small-capitalization companies considered to have above-average earnings growth potential.&lt;/span&gt;</fnd:NmRule35d1TermDfnSmryTextBlock>
</xbrl>
