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Acquisitions and Other Recent Business Ventures (Details) (USD $) | 12 Months Ended | 0 Months Ended
--- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Mar. 28, 2014 | Nov. 02, 2012 item sqft acre mi | Apr. 05, 2013 item sqft
Acquisitions |  |  |  |  |  |
Preliminary purchase price allocated to goodwill | $ 277,582,000 us-gaap_Goodwill | $ 492,398,000 us-gaap_Goodwill | $ 1,380,689,000 us-gaap_Goodwill |  |  |
Acquisition of businesses and gaming and other licenses | 118,678,000 penn_PaymentsToAcquireBusinessesAndIntangibleAssetsNetOfCashAcquired | 73,000 penn_PaymentsToAcquireBusinessesAndIntangibleAssetsNetOfCashAcquired | 709,450,000 penn_PaymentsToAcquireBusinessesAndIntangibleAssetsNetOfCashAcquired |  |  |
Plainridge Racecourse |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Period for calculation of contingent purchase price consideration based on the annual earnings | 10 years |  |  |  |  |
Period contingent purchase price consideration is due following first four fiscal quarters | 60 days |  |  |  |  |
Fair value for contingent purchase price consideration | 19,200,000 us-gaap_BusinessCombinationContingentConsiderationLiability / us-gaap_BusinessAcquisitionAxis = penn_PlainridgeRacecourseMember |  |  |  |  |
Preliminary purchase price allocated to land and buildings | 57,900,000 penn_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLandAndBuildings / us-gaap_BusinessAcquisitionAxis = penn_PlainridgeRacecourseMember |  |  |  |  |
Preliminary purchase price allocated to goodwill | 3,000,000 us-gaap_Goodwill / us-gaap_BusinessAcquisitionAxis = penn_PlainridgeRacecourseMember |  |  |  |  |
Plainridge Park Casino Properties |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Number of gaming devices | 1,250 penn_NumberOfSlotMachines / us-gaap_BusinessAcquisitionAxis = penn_PlainridgeParkCasinoPropertiesMember |  |  |  |  |
Estimated value of Casino | 225,000,000 penn_RealEstatePropertyEstimatedValue / us-gaap_BusinessAcquisitionAxis = penn_PlainridgeParkCasinoPropertiesMember |  |  |  |  |
Size of foot clubhouse (in square feet) | 55,000 penn_BusinessAcquisitionAreaOfClubhouseOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_PlainridgeParkCasinoPropertiesMember |  |  |  |  |
Acquisition of businesses and gaming and other licenses |  |  |  | 25,000,000 penn_PaymentsToAcquireBusinessesAndIntangibleAssetsNetOfCashAcquired / us-gaap_BusinessAcquisitionAxis = penn_PlainridgeParkCasinoPropertiesMember |  |
Harrahs St Louis Gaming and Lodging Facility |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Size of property where facility is located (in acres) |  |  |  |  | 248 penn_BusinessAcquisitionAcreageOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Number of parking spaces |  |  |  |  | 4,600 penn_NumberOfParkingSpacesStructure / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Percentage of voting interest to be acquired |  |  |  |  | 100.00%us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Purchase price of the entity to be acquired |  |  |  |  | 615,200,000 us-gaap_BusinessCombinationConsiderationTransferred1 / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Cash acquired |  |  |  |  | 12,300,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Purchase price allocated to goodwill and other intangible assets |  |  |  |  | 386,500,000 penn_BusinessAcquisitionPurchasePriceAllocationGoodwillAndOtherIntangibleAssets / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Purchase price allocated to property and equipment, net |  |  |  |  | 225,100,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Purchase price allocated to total current assets |  |  |  |  | 600,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssets / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Purchase price allocated to total current liabilities |  |  |  |  | 9,300,000 us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Location of facility in distance from major metropolitan area (in miles) |  |  |  |  | 22 penn_BusinessAcquisitionNumberOfMilesOfAcquiredEntityFromASpecifiedLocation / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Area of gaming space at facility (in square feet) |  |  |  |  | 645,270 penn_BusinessAcquisitionAreaOfGamingSpaceOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Number of slot machines at facility |  |  |  |  | 2,112 penn_BusinessAcquisitionNumberOfSlotMachinesOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Number of table games at facility |  |  |  |  | 57 penn_BusinessAcquisitionNumberOfTableGamesOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Number of poker tables at facility |  |  |  |  | 21 penn_BusinessAcquisitionNumberOfPokerTablesOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Number of guestroom hotels at facility |  |  |  |  | 502 penn_BusinessAcquisitionNumberOfGuestroomHotelsOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Number of dining and entertainment venues, structured and surface parking at the facility |  |  |  |  | 9 penn_BusinessAcquisitionNumberOfDinningAndEntertainmentVenuesOfAcquiredEntity / us-gaap_BusinessAcquisitionAxis = penn_HarrahsStLouisGamingAndLodgingFacilityMember |
Definitive Agreement with Jamul Indian Village |  |  |  |  |  |
Acquisitions |  |  |  |  |  |
Size of property where facility is located (in acres) | 6 penn_BusinessAcquisitionAcreageOfAcquiredEntity / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember |  |  |  |  |
Proposed facility development cost |  |  |  |  |  | 360,000,000 penn_ProposedFacilityDevelopmentCost / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember
Size of gaming and entertainment facility (in square feet) |  |  |  |  |  | 200,000 us-gaap_AreaOfRealEstateProperty / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember
Number of gaming devices |  |  |  |  |  | 1,700 penn_NumberOfSlotMachines / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember
Number of table games |  |  |  |  |  | 43 penn_NumberOfTableGames / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember
Number of parking spaces |  |  |  |  |  | 1,800 penn_NumberOfParkingSpacesStructure / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember
Maximum conditional loan commitment | 400,000,000 penn_MaximumConditionalLoanCommitment / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember |  |  |  |  |
Anticipated funding under conditional loan commitment | 360,000,000 penn_ConditionalLoanCommitmentEstimatedFunding / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember |  |  |  |  |
Note receivable | 62,000,000 us-gaap_AccountsAndNotesReceivableNet / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember | 7,000,000 us-gaap_AccountsAndNotesReceivableNet / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember |  |  |  |
Interest Receivable | $ 3,300,000 us-gaap_InterestReceivable / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember | $ 500,000 us-gaap_InterestReceivable / penn_TypeOfAgreementAxis = penn_DefinitiveAgreementWithJamulIndianVillageMember |  |  |  |

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- Definition Represents the area of gaming space at the acquired facility. + References No definition available. + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents the period the first contingent purchase price consideration is due following the first four fiscal quarters of operation. + References No definition available. + Details
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- Definition For contingent consideration arrangements recognized in connection with a business combination, this element represents period for calculation of contingent purchase price consideration based on the annual earnings. + References No definition available. + Details
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- Definition Amount of real estate acquired and amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date. + References No definition available. + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. It also includes the cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill. + References No definition available. + Details
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- Definition Estimated value of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References No definition available. + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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- Definition Amount of assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=39739317&loc=d3e4845-128472 + Details
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