Annual Total Returns (Vanguard Pennsylvania Tax-Exempt Money Market Fund - Investor Shares Retail) (Vanguard Pennsylvania Tax-Exempt Money Market Fund, Vanguard Pennsylvania Tax-Exempt Money Market Fund - Investor Shares)	12 Months Ended
Nov. 30, 2014
Vanguard Pennsylvania Tax-Exempt Money Market Fund \| Vanguard Pennsylvania Tax-Exempt Money Market Fund - Investor Shares
Annual Total Return
2014	0.01%
2013	0.01%
2012	0.03%
2011	0.05%
2010	0.12%
2009	0.41%
2008	2.24%
2007	3.61%
2006	3.37%
2005	2.32%

Annual Total Returns (Vanguard Pennsylvania Tax-Exempt Money Market Fund - Investor Shares Retail) (Vanguard Pennsylvania Tax-Exempt Money Market Fund, Vanguard Pennsylvania Tax-Exempt Money Market Fund - Investor Shares)

12 Months Ended

Nov. 30, 2014

Vanguard Pennsylvania Tax-Exempt Money Market Fund | Vanguard Pennsylvania Tax-Exempt Money Market Fund - Investor Shares

Annual Total Return

2014

0.01%rr_AnnualReturn2014
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2013

0.01%rr_AnnualReturn2013
/ dei_LegalEntityAxis
= vanguard_S000002912Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007978Member

2012

0.03%rr_AnnualReturn2012
/ dei_LegalEntityAxis
= vanguard_S000002912Member
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= vanguard_C000007978Member

2011

0.05%rr_AnnualReturn2011
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2010

0.12%rr_AnnualReturn2010
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= vanguard_C000007978Member

2009

0.41%rr_AnnualReturn2009
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= vanguard_S000002912Member
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= vanguard_C000007978Member

2008

2.24%rr_AnnualReturn2008
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= vanguard_S000002912Member
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= vanguard_C000007978Member

2007

3.61%rr_AnnualReturn2007
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= vanguard_S000002912Member
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= vanguard_C000007978Member

2006

3.37%rr_AnnualReturn2006
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= vanguard_S000002912Member
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= vanguard_C000007978Member

2005

2.32%rr_AnnualReturn2005
/ dei_LegalEntityAxis
= vanguard_S000002912Member
/ rr_ProspectusShareClassAxis
= vanguard_C000007978Member

- Definition

If the Fund has annual returns for at least one calendar year, provide a bar chart showing the Fund's annual total returns for each of the last 10 calendar years (or for the life of the Fund if less than 10 years), but only for periods subsequent to the effective date of the Fund's registration statement. Present the corresponding numerical return adjacent to each bar. If the Fund's fiscal year is other than a calendar year, include the year-to-date return information as of the end of the most recent quarter in a footnote to the bar chart. Following the bar chart, disclose the Fund's highest and lowest return for a quarter during the 10 years or other period of the bar chart. When a Multiple Class Fund offers more than one Class in the prospectus, provide annual total returns in the bar chart for only one of those Classes. The Fund can select which Class to include (e.g., the oldest Class, the Class with the greatest net assets).

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