XML 9 R1.htm IDEA: XBRL DOCUMENT v3.7.0.1
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Document Type dei_DocumentType 485BPOS
Document Period End Date dei_DocumentPeriodEndDate Nov. 30, 2016
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 Mar. 28, 2017
Document Effective Date dei_DocumentEffectiveDate Mar. 28, 2017
Prospectus Date rr_ProspectusDate Mar. 28, 2017