Vanguard Short Duration Tax-Exempt Bond ETF Expense Example - ETF Prospectus [Member] - Vanguard Short Duration Tax-Exempt Bond ETF - ETF Shares	Oct. 31, 2025 USD ($)
Prospectus [Line Items]
Expense Example, with Redemption, 1 Year	$ 12
Expense Example, with Redemption, 3 Years	39
Expense Example, with Redemption, 5 Years	68
Expense Example, with Redemption, 10 Years	$ 154

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