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11/1/2009 - 10/31/2010
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11/1/2009 - 10/31/2010
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{rr_ProspectusShareClassAxis} : Vanguard International Explorer Fund - Investor Shares
{rr_PerformanceMeasureAxis} : Return After Taxes on Distributions and Sale of Fund Shares
11/1/2009 - 10/31/2010
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{rr_PerformanceMeasureAxis} : Return After Taxes on Distributions and Sale of Fund Shares
11/1/2009 - 10/31/2010
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11/1/2009 - 10/31/2010
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