v2.4.0.6

Organization and Basis of Presentation (Details)	Mar. 31, 2012 jurisdiction facility
Organization and Basis of Presentation
Number of facilities the entity owns, manages, or has ownership interests in	26
Number of jurisdictions in which the entity operates	19

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

Name:	penn_NumberOfFacilities
Namespace Prefix:	penn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of jurisdictions the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	penn_NumberOfJurisdictionsInWhichEntityOperates
Namespace Prefix:	penn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration