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Goodwill and Other Intangible Assets (Details) (USD $) | 3 Months Ended | 12 Months Ended | 3 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2014 | Nov. 01, 2013
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill acquired |  |  | $ 3,052,000 us-gaap_GoodwillAcquiredDuringPeriod |  |  |  |
Balance at the beginning of the period, Goodwill gross |  |  | 2,133,719,000 us-gaap_GoodwillGross | 2,214,546,000 us-gaap_GoodwillGross |  |  |
Balance at the beginning of the period, Accumulated goodwill impairment losses |  |  | (1,641,321,000)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (833,857,000)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss |  |  |
Goodwill, Beginning Balance |  |  | 492,398,000 us-gaap_Goodwill | 1,380,689,000 us-gaap_Goodwill |  |  |
Goodwill impairment losses |  |  | (212,193,000)us-gaap_GoodwillImpairmentLoss | (807,464,000)us-gaap_GoodwillImpairmentLoss |  |  |
Contribution of Hollywood Casino Baton Rouge to GLPI |  |  |  | (75,521,000)us-gaap_GoodwillTransfers |  |  |
Other |  |  | (5,675,000)us-gaap_GoodwillOtherChanges | (5,306,000)us-gaap_GoodwillOtherChanges |  |  |
Balance at the end of the period, Goodwill gross |  | 2,133,719,000 us-gaap_GoodwillGross | 2,131,096,000 us-gaap_GoodwillGross | 2,133,719,000 us-gaap_GoodwillGross | 2,214,546,000 us-gaap_GoodwillGross | 2,131,096,000 us-gaap_GoodwillGross |
Balance at the end of the period, Accumulated goodwill impairment losses |  | (1,641,321,000)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (1,853,514,000)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (1,641,321,000)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (833,857,000)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss | (1,853,514,000)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss |
Goodwill, Ending Balance |  | 492,398,000 us-gaap_Goodwill | 277,582,000 us-gaap_Goodwill | 492,398,000 us-gaap_Goodwill | 1,380,689,000 us-gaap_Goodwill | 277,582,000 us-gaap_Goodwill |
Intangible assets |  |  |  |  |  |  |
Indefinite-life intangible assets |  | 349,224,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill | 370,100,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill | 349,224,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill |  | 370,100,000 us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill |
Finite-lived intangible assets, Accumulated Amortization |  | 66,190,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | 76,613,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | 66,190,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  | 76,613,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |
Finite-lived intangible assets, Net Book Value |  |  | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet |  |  | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet |
Intangible assets, Gross Carrying Value |  | 425,838,000 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 447,175,000 us-gaap_IntangibleAssetsGrossExcludingGoodwill | 425,838,000 us-gaap_IntangibleAssetsGrossExcludingGoodwill |  | 447,175,000 us-gaap_IntangibleAssetsGrossExcludingGoodwill |
Intangible Assets, Net (Excluding Goodwill), Total |  | 359,648,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 370,562,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 359,648,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  | 370,562,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |
Change in indefinite life intangible assets during the period |  |  | 10,900,000 us-gaap_IndefiniteLivedIntangibleAssetsPeriodIncreaseDecrease |  |  |  |
Other intangible assets |  | 359,648,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 370,562,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 359,648,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  | 370,562,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |
Pre-tax goodwill impairment charge |  |  | 212,193,000 us-gaap_GoodwillImpairmentLoss | 807,464,000 us-gaap_GoodwillImpairmentLoss |  |  |
Intangible asset amortization expense |  |  | 11,400,000 us-gaap_AmortizationOfIntangibleAssets | 16,100,000 us-gaap_AmortizationOfIntangibleAssets | 800,000 us-gaap_AmortizationOfIntangibleAssets |  |
Other intangible asset impairment charge, pre-tax | 4,600,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill | 2,200,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill | 104,300,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |
2016 |  |  | 33,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo |  |  | 33,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo |
2017 |  |  | 66,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree |  |  | 66,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree |
2018 |  |  | 66,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour |  |  | 66,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour |
2019 |  |  | 66,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive |  |  | 66,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive |
Thereafter |  |  | 231,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive |  |  | 231,000 us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive |
Finite-lived intangible assets, Net Book Value |  |  | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet |  |  | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet |
Goodwill |  | 492,398,000 us-gaap_Goodwill | 277,582,000 us-gaap_Goodwill | 492,398,000 us-gaap_Goodwill | 1,380,689,000 us-gaap_Goodwill | 277,582,000 us-gaap_Goodwill |
Other intangible assets |  | 359,648,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 370,562,000 us-gaap_IntangibleAssetsNetExcludingGoodwill | 359,648,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |  | 370,562,000 us-gaap_IntangibleAssetsNetExcludingGoodwill |
Spinoff |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill impairment losses |  |  |  | (738,800,000)us-gaap_GoodwillImpairmentLoss / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember |  |  |
Intangible assets |  |  |  |  |  |  |
Pre-tax goodwill impairment charge |  |  |  | 738,800,000 us-gaap_GoodwillImpairmentLoss / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember |  |  |
Hollywood Gaming at Dayton Raceway And Mahoning Valley Race Course |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Gaming license fee | 10,000,000 penn_GamingLicenseFee / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayAndMahoningValleyRaceCourseMember |  | 100,000,000 penn_GamingLicenseFee / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayAndMahoningValleyRaceCourseMember |  |  | 15,000,000 penn_GamingLicenseFee / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayAndMahoningValleyRaceCourseMember |
Gaming license payable due one year from commencement of operations |  |  | 50,000,000 penn_GamingLicensePayable / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayAndMahoningValleyRaceCourseMember |  |  | 50,000,000 penn_GamingLicensePayable / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayAndMahoningValleyRaceCourseMember |
Gaming license fee terms |  |  | 1 year |  |  |  |
Hollywood Gaming at Dayton Raceway |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 15,339,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |  |  | 15,339,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |
Other intangible assets |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |
Gaming license payable due one year from commencement of operations |  |  | 25,000,000 penn_GamingLicensePayable / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |  |  | 25,000,000 penn_GamingLicensePayable / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 15,339,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |  |  | 15,339,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |
Other intangible assets |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodGamingAtDaytonRacewayMember |
Mahoning Valley Race Course |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |
Other intangible assets |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |
Gaming license payable due one year from commencement of operations |  |  | 25,000,000 penn_GamingLicensePayable / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |  |  | 25,000,000 penn_GamingLicensePayable / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |
Expected future amortization expense |  |  |  |  |  |  |
Other intangible assets |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_MahoningValleyRaceCourseMember |
Plainridge Park Casino Member |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 3,052,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |  |  | 3,052,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 25,297,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |  |  | 25,297,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |
Other intangible assets |  |  | 25,297,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |  |  | 25,297,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |
Gaming license fee |  |  | 25,000,000 penn_GamingLicenseFee / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |  |  |  |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 3,052,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |  |  | 3,052,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |
Other intangible assets |  |  | 25,297,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |  |  | 25,297,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_PlainridgeParkCasinoMember |
Hollywood Casino St Louis |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 77,072,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoStLouisMember |  |  | 77,072,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoStLouisMember |
Other intangible assets |  |  | 77,072,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoStLouisMember |  |  | 77,072,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoStLouisMember |
Expected future amortization expense |  |  |  |  |  |  |
Other intangible assets |  |  | 77,072,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoStLouisMember |  |  | 77,072,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoStLouisMember |
Argosy Casino Riverside |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 32,122,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |  |  | 32,122,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 4,964,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |  |  | 4,964,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |
Other intangible assets |  |  | 4,964,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |  |  | 4,964,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 32,122,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |  |  | 32,122,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |
Other intangible assets |  |  | 4,964,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |  |  | 4,964,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoRiversideMember |
Zia Park Casino |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 144,171,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ZiaParkCasinoMember |  |  | 144,171,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ZiaParkCasinoMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 144,171,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ZiaParkCasinoMember |  |  | 144,171,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_ZiaParkCasinoMember |
Hollywood Casino Joliet |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 6,886,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |  |  | 6,886,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 44,464,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |  |  | 44,464,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |
Other intangible assets |  |  | 44,464,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |  |  | 44,464,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 6,886,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |  |  | 6,886,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |
Other intangible assets |  |  | 44,464,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |  |  | 44,464,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoJolietMember |
Hollywood Casino at Penn National Race Course |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 1,497,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |  |  | 1,497,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 67,607,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |  |  | 67,607,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |
Other intangible assets |  |  | 67,607,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |  |  | 67,607,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 1,497,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |  |  | 1,497,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |
Other intangible assets |  |  | 67,607,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |  |  | 67,607,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAtPennNationalRaceCourseMember |
Hollywood Casino Lawrenceburg |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoLawrenceburgMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoLawrenceburgMember |
Other intangible assets |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoLawrenceburgMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoLawrenceburgMember |
Expected future amortization expense |  |  |  |  |  |  |
Other intangible assets |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoLawrenceburgMember |  |  | 50,000,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoLawrenceburgMember |
Hollywood Casino Aurora |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 37,687,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAuroraMember |  |  | 37,687,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAuroraMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 37,687,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAuroraMember |  |  | 37,687,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoAuroraMember |
Argosy Casino Sioux City |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill impairment losses |  |  |  | (68,700,000)us-gaap_GoodwillImpairmentLoss / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityMember |  |  |
Intangible assets |  |  |  |  |  |  |
Pre-tax goodwill impairment charge |  |  |  | 68,700,000 us-gaap_GoodwillImpairmentLoss / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityMember |  |  |
Other intangible asset impairment charge, pre-tax |  |  |  | 3,100,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityMember |  |  |
Other Reporting Units |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 5,158,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |  |  | 5,158,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |
Intangible assets |  |  |  |  |  |  |
Intangible Assets, Net (Excluding Goodwill), Total |  |  | 1,158,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |  |  | 1,158,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |
Other intangible assets |  |  | 1,158,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |  |  | 1,158,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 5,158,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |  |  | 5,158,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |
Other intangible assets |  |  | 1,158,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |  |  | 1,158,000 us-gaap_IntangibleAssetsNetExcludingGoodwill / us-gaap_SubsegmentsAxis = penn_OtherReportingUnitsMember |
Hollywood Casino Baton Rouge and Hollywood Casino Perryville | Spinoff |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Beginning Balance |  |  |  |  |  |  | 75,500,000 us-gaap_Goodwill / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoBatonRougeAndHollywoodCasinoPerryvilleMember
Goodwill, Ending Balance |  |  |  |  |  |  | 75,500,000 us-gaap_Goodwill / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoBatonRougeAndHollywoodCasinoPerryvilleMember
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  | 75,500,000 us-gaap_Goodwill / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoBatonRougeAndHollywoodCasinoPerryvilleMember
Argosy Casino Sioux City Facility |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill impairment losses |  |  |  | (68,700,000)us-gaap_GoodwillImpairmentLoss / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  |  |
Intangible assets |  |  |  |  |  |  |
Pre-tax goodwill impairment charge |  |  |  | 68,700,000 us-gaap_GoodwillImpairmentLoss / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  |  |
Boomtown Biloi Facility |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 22,365,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_BoomtownBiloiFacilityMember |  |  | 22,365,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_BoomtownBiloiFacilityMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 22,365,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_BoomtownBiloiFacilityMember |  |  | 22,365,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_BoomtownBiloiFacilityMember |
Hollywood Casino Tunica |  |  |  |  |  |  |
Reconciliation of goodwill and accumulated goodwill impairment losses |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 9,305,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoTunicaMember |  |  | 9,305,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoTunicaMember |
Expected future amortization expense |  |  |  |  |  |  |
Goodwill |  |  | 9,305,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoTunicaMember |  |  | 9,305,000 us-gaap_Goodwill / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoTunicaMember |
Argosy Casino Sioux City gaming license | Hollywood Casino Baton Rouge and Hollywood Casino Perryville | Spinoff |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  | 9,600,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoBatonRougeAndHollywoodCasinoPerryvilleMember
Expected future amortization expense |  |  |  |  |  |  |
Finite-lived intangible assets, Net Book Value |  |  |  |  |  |  | 9,600,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember / us-gaap_SubsegmentsAxis = penn_HollywoodCasinoBatonRougeAndHollywoodCasinoPerryvilleMember
Argosy Casino Sioux City gaming license | Argosy Casino Sioux City Facility |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Finite-lived intangible assets, Gross Carrying Value |  | 20,949,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember | 20,949,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember | 20,949,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  | 20,949,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |
Finite-lived intangible assets, Accumulated Amortization |  | 12,569,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember | 20,949,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember | 12,569,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  | 20,949,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |
Finite-lived intangible assets, Net Book Value |  | 8,380,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  | 8,380,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  |  |
Expected future amortization expense |  |  |  |  |  |  |
Finite-lived intangible assets, Net Book Value |  | 8,380,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  | 8,380,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = penn_GamingLicenseMember / us-gaap_SubsegmentsAxis = penn_ArgosyCasinoSiouxCityFacilityMember |  |  |
Other Intangible Assets |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Finite-lived intangible assets, Gross Carrying Value |  | 55,665,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 56,126,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 55,665,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  | 56,126,000 us-gaap_FiniteLivedIntangibleAssetsGross / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |
Finite-lived intangible assets, Accumulated Amortization |  | 53,621,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 55,664,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 53,621,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  | 55,664,000 us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |
Finite-lived intangible assets, Net Book Value |  | 2,044,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 2,044,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |
Expected future amortization expense |  |  |  |  |  |  |
Finite-lived intangible assets, Net Book Value |  | 2,044,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember | 2,044,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |  | 462,000 us-gaap_FiniteLivedIntangibleAssetsNet / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember |
Other Intangible Assets | Spinoff |  |  |  |  |  |  |
Intangible assets |  |  |  |  |  |  |
Other intangible asset impairment charge, pre-tax |  |  |  | $ 319,600,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OtherIntangibleAssetsMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_SpinoffMember |  |  |

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