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Summary of Significant Accounting Policies (Details 6) (Kansas) | Mar. 31, 2014
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Kansas |
Segment Information |
Ownership interest in joint venture (as a percent) | 50.00%

X
- Definition Represents the entity's ownership interest in a joint venture. + References No definition available. + Details
Name: | penn_JointVentureOwnershipInterestPercentage
Namespace Prefix: | penn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration