XML 12 R6.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Document Type dei_DocumentType Other
Document Period End Date dei_DocumentPeriodEndDate Nov. 30, 2010
Registrant Name dei_EntityRegistrantName Vanguard Pennsylvania Tax-Free Funds
Central Index Key dei_EntityCentralIndexKey 0000788606
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Jun. 23, 2011
Document Effective Date dei_DocumentEffectiveDate Mar. 29, 2011
Retail | Vanguard Pennsylvania Tax-Exempt Money Market Fund
 
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Mar. 29, 2011
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Vanguard Pennsylvania Tax-Exempt Money Market Fund | Vanguard Pennsylvania Tax-Exempt Money Market Fund - Investor Shares
 
Risk/Return: rr_RiskReturnAbstract  
Sales charge (load) imposed on purchases rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Purchase Fee rr_MaximumCumulativeSalesChargeOverOther none
Sales charge (load) imposed on reinvested dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Account Service Fee (for fund account balances below $10,000) rr_MaximumAccountFee 20
Management Expenses rr_ManagementFeesOverAssets 0.14%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.03%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.17% [1]
[1] Vanguard and the Fund's Board have voluntarily agreed to temporarily limit certain net operating expenses in excess of the Fund's daily yield so as to maintain a zero or positive yield for the Fund. Vanguard and the Fund's Board may terminate the temporary expense limitation at any time.