Represents the number of lease renewal options.

No definition available.

Name:	penn_LeaseRenewalOptionsNumber
Namespace Prefix:	penn_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- 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

- Definition

Represents the rental obligation expressed as a percentage of the real estate construction costs paid.

+ References

No definition available.

+ Details

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

- 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

- 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 month.

+ References

No definition available.

+ Details

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

- 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

- 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

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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

- Definition

Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesRenewalTerm
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Term of the lessee's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LesseeLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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

- Details

Name:	penn_OperatingLeasesByTypeAxis=penn_MasterLeaseAgreementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies (Details 2) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
	Nov. 01, 2013	Mar. 31, 2015 item	Mar. 31, 2014
Rental expense related to the master lease
Total rental expense		$ 108,845us-gaap_LeaseAndRentalExpense	$ 104,309us-gaap_LeaseAndRentalExpense
Master Lease
Rental expense related to the master lease
Number of lease renewal options		4
Term of lease renewal options		5 years
Initial term of Master Lease	15 years	15 years
Total rental expense		$ 108,800	$ 104,300
Master Lease \| Facilities Held Under Leases
Rental expense related to the master lease
Number of real property assets associated with Company's gaming and related facilities		18
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%
Adjustment to operating lease component as percentage of the average change to net revenues during preceding month	20.00%
Real estate construction costs paid for by GLPI to facilities (in percentage)		10.00%