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Organization and Basis of Presentation (Details) | Oct. 15, 2018 jurisdiction facility | Sep. 30, 2018 jurisdiction facility
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Organization and Basis of Presentation |  |
Number of facilities the entity owned, managed, or had ownership interests in | facility | 40 | 27
Number of jurisdictions in which the entity operates facilities | jurisdiction | 18 | 15

X
- Definition The number of facilities which the entity owns, manages or has an ownership interest in as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | penn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of jurisdictions in which the entity operates facilities. + References No definition available. + Details
Name: | penn_NumberOfJurisdictionsInWhichEntityOperates
Namespace Prefix: | penn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration