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Summary of Significant Accounting Policies (Details 6) | 0 Months Ended | 12 Months Ended
--- | --- | ---
Nov. 01, 2013 item | Dec. 31, 2013
Rental expense related to the master lease |  |
Term of lease renewal options | 5 years |
Master Lease |  |
Rental expense related to the master lease |  |
Term of lease renewal options |  | 5 years
Initial term of lease |  | 15 years
Master Lease | Facilities under the Master Lease |  |
Rental expense related to the master lease |  |
Number of real property assets associated with Company's gaming and related facilities | 17 |
Percentage of escalation to fixed components of rent if certain rent coverage ratio thresholds are met |  | 2.00%
Period over which operating lease component is adjusted |  | 5 years
Adjustment to operating lease component as percentage of the average change to net revenues during preceding five years |  | 4.00%

X
- Definition Represents the initial term of lease. + References No definition available. + Details
Name: | penn_LeaseInitialTerm
Namespace Prefix: | penn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the term of lease renewal options. + References No definition available. + Details
Name: | penn_LeaseRenewalOptionsTerm
Namespace Prefix: | penn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of real estate property assets associated with gaming and related facilities under leases. + References No definition available. + Details
Name: | penn_NumberOfRealEstatePropertyAssetsAssociatedWithGamingAndRelatedFacilitiesUnderLeases
Namespace Prefix: | penn_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the adjustment to operating lease component expressed as a percentage of the average change to net revenues from assets under lease during the preceding five years. + References No definition available. + Details
Name: | penn_OperatingLeaseComponentAdjustmentAsPercentageOfAverageChangeToNetRevenuesDuringPrecedingFiveYears
Namespace Prefix: | penn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the percentage of escalation to fixed components of lease if certain rent coverage ratio thresholds are met. + References No definition available. + Details
Name: | penn_OperatingLeasesPercentageOfEscalationIfCertainRentCoverageRatioThresholdsAreMet
Namespace Prefix: | penn_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period over which operating lease component is adjusted. + References No definition available. + Details
Name: | penn_PeriodOverWhichOperatingLeaseComponentAdjusted
Namespace Prefix: | penn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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