Percent of total assets at close of period.

No definition available.

Name:	penn_AssetsPercentOfTotalAssets
Namespace Prefix:	penn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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

- Definition

The percent of total net revenues of the entity represented by the segment or subsegment.

+ References

No definition available.

+ Details

Name:	penn_PercentOfNetRevenue
Namespace Prefix:	penn_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

No definition available.

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The net result for the period of deducting operating expenses from operating revenues.

+ References

No definition available.

+ Details

Name:	us-gaap_OperatingIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

- Details

Name:	us-gaap_InvestmentsInAndAdvancesToAffiliatesCategorizationAxis=penn_KansasEntertainmentLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=penn_PennInteractiveVenturesLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies - Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($) segment	Jun. 30, 2016 segment	Mar. 31, 2016 USD ($)
Segment Information
Number of reportable segments \| segment	3	3
Impact to income from operations	$ 140,287		$ 140,531
Kansas Entertainment
Segment Information
Ownership interest in joint venture (as a percent)	50.00%
Penn Interactive Ventures
Segment Information
Percent of net revenue	1.50%
Impact to income from operations	$ (1,400)
Percent of total assets	2.20%