Performance Management - Vanguard Long-Term Tax-Exempt Bond ETF	Oct. 31, 2024
Prospectus [Line Items]
Bar Chart and Performance Table [Heading]	<span style="color:#000000;font-family:Arial;font-size:10pt;font-weight:bold;">Annual Total Returns</span>
Performance Narrative [Text Block]	This is the Fund’s initial prospectus, so it does not contain performance data.
Performance One Year or Less [Text]	<span style="color:#000000;font-family:Arial;font-size:9.5pt;">This is the Fund’s initial prospectus, so it does not contain performance data.</span>