Name:	penn_BuilderRiskInsurancePolicyDeductibleDelayInCompletion
Namespace Prefix:	penn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Amount of risk retained by the entity before the builders' risk insurance arrangement begins to provide coverage related to property damage.

No definition available.

Name:	penn_BuilderRiskInsurancePolicyDeductiblePropertyDamage
Namespace Prefix:	penn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the coverage limit provided by the insurance arrangement for claims related to builders' risk, including delay in completion of the project and property damage.

No definition available.

Name:	penn_BuilderRiskInsurancePolicyLimitAmount
Namespace Prefix:	penn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the number of hours for which casino was closed due to tornado.

No definition available.

Name:	penn_NumberHoursForWhichCasinoClosedDueToTornado
Namespace Prefix:	penn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The life-to-date amount received by the entity from insurance settlements.

No definition available.

Name:	penn_ProceedsFromInsuranceSettlements
Namespace Prefix:	penn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Represents the coverage limit provided by the insurance arrangement for claims related to flood.

No definition available.

Name:	penn_PropertyInsuranceCoverageLimitAmount
Namespace Prefix:	penn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the number of business interruption periods covered in the insurance arrangement for claims related to flood.

No definition available.

Name:	penn_PropertyInsuranceCoverageLimitForDeductibleBusinessInterruption
Namespace Prefix:	penn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Represents the coverage limit provided by the insurance arrangement for claims related to flood for property damage.

No definition available.

Name:	penn_PropertyInsuranceCoverageLimitForPropertyDamage
Namespace Prefix:	penn_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Amount of gain recognized in the income statement for an event or transaction, that is unusual in nature or occurs infrequently, but not both.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 20
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6365513&loc=d3e15138-107781

Name:	us-gaap_UnusualOrInfrequentItemGainGross
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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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.

No definition available.

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

Amount of loss recognized in the income statement for an event or transaction, that is unusual in nature or occurs infrequently, but not both.

Name:	us-gaap_UnusualOrInfrequentItemLossGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Name:	us-gaap_UnusualOrInfrequentItemAxis=us-gaap_TornadoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_SubsegmentsAxis=penn_HollywoodCasinoStLouisMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_UnusualOrInfrequentItemAxis=us-gaap_FloodMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: