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Income Taxes (Details 2) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Jun. 30, 2014 | Dec. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Income Taxes |  |  |  |  |  |
Goodwill and other intangible impairment charge | $ 316,500,000 us-gaap_GoodwillAndIntangibleAssetImpairment |  |  |  |  |
Pre-tax goodwill impairment charge |  |  |  | 212,193,000 us-gaap_GoodwillImpairmentLoss | 807,464,000 us-gaap_GoodwillImpairmentLoss |
Pre-tax other intangible asset impairment charge |  | 4,600,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill | 2,200,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill | 104,300,000 us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill |  |
Period of cumulative pre-tax loss position |  |  |  | 3 years |  |
Deferred Tax Assets, Net of Valuation Allowance | 262,030,000 us-gaap_DeferredTaxAssetsNet |  | 165,342,000 us-gaap_DeferredTaxAssetsNet | 262,030,000 us-gaap_DeferredTaxAssetsNet | 165,342,000 us-gaap_DeferredTaxAssetsNet |
Reduction of valuation allowance |  |  |  | (3,200,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount |  |
Current tax expense (benefit) |  |  |  |  |  |
Federal |  |  |  | 17,413,000 us-gaap_CurrentFederalTaxExpenseBenefit | 96,537,000 us-gaap_CurrentFederalTaxExpenseBenefit | 96,490,000 us-gaap_CurrentFederalTaxExpenseBenefit
State |  |  |  | 8,764,000 us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 2,200,000 us-gaap_CurrentStateAndLocalTaxExpenseBenefit | 14,448,000 us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Foreign |  |  |  | 7,515,000 us-gaap_CurrentForeignTaxExpenseBenefit | 4,708,000 us-gaap_CurrentForeignTaxExpenseBenefit | (3,366,000)us-gaap_CurrentForeignTaxExpenseBenefit
Total current |  |  |  | 33,692,000 us-gaap_CurrentIncomeTaxExpenseBenefit | 103,445,000 us-gaap_CurrentIncomeTaxExpenseBenefit | 107,572,000 us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred tax (benefit) expense |  |  |  |  |  |
Federal |  |  |  | (56,125,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit | (207,337,000)us-gaap_DeferredFederalIncomeTaxExpenseBenefit | 44,874,000 us-gaap_DeferredFederalIncomeTaxExpenseBenefit
State |  |  |  | (16,153,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | (17,646,000)us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit | 109,000 us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit
Total deferred |  |  |  | (72,278,000)us-gaap_DeferredIncomeTaxExpenseBenefit | (224,983,000)us-gaap_DeferredIncomeTaxExpenseBenefit | 44,983,000 us-gaap_DeferredIncomeTaxExpenseBenefit
Total income tax (benefit) provision |  |  |  | (38,586,000)us-gaap_IncomeTaxExpenseBenefit | (121,538,000)us-gaap_IncomeTaxExpenseBenefit | 152,555,000 us-gaap_IncomeTaxExpenseBenefit
Percent of pretax (loss) income |  |  |  |  |  |
Federal taxes (as a percent) |  |  |  | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate | 35.00%us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
State and local income taxes (as a percent) |  |  |  | 0.80%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 1.10%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes | 1.40%us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes
Permanent differences (as a percent) |  |  |  | (20.90%)penn_EffectiveIncomeTaxRateReconciliationPermanentDifferences | (22.70%)penn_EffectiveIncomeTaxRateReconciliationPermanentDifferences | 5.30%penn_EffectiveIncomeTaxRateReconciliationPermanentDifferences
Foreign (as a percent) |  |  |  | (1.60%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential | 0.20%us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential
Other miscellaneous items (as a percent) |  |  |  | 0.90%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | 0.00%us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments | (0.10%)us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments
Actual effective income tax rate (as a percent) |  |  |  | 14.20%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 13.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations | 41.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Amount based upon pretax (loss) income |  |  |  |  |  |
Federal taxes |  |  |  | (95,123,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | (320,557,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate | 127,584,000 us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State and local income taxes |  |  |  | (2,288,000)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | (9,677,000)us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes | 5,044,000 us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Permanent differences |  |  |  | 56,886,000 penn_IncomeTaxReconciliationPermanentDifferences | 207,928,000 penn_IncomeTaxReconciliationPermanentDifferences | 19,223,000 penn_IncomeTaxReconciliationPermanentDifferences
Foreign |  |  |  | 4,356,000 us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | 1,200,000 us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential | 886,000 us-gaap_IncomeTaxReconciliationForeignIncomeTaxRateDifferential
Other miscellaneous items |  |  |  | (2,417,000)us-gaap_IncomeTaxReconciliationOtherAdjustments | (432,000)us-gaap_IncomeTaxReconciliationOtherAdjustments | (182,000)us-gaap_IncomeTaxReconciliationOtherAdjustments
Total income tax (benefit) provision |  |  |  | (38,586,000)us-gaap_IncomeTaxExpenseBenefit | (121,538,000)us-gaap_IncomeTaxExpenseBenefit | 152,555,000 us-gaap_IncomeTaxExpenseBenefit
Reconciliation of liability for unrecognized tax benefits |  |  |  |  |  |
Balance at the beginning of the period |  |  |  | 19,966,000 us-gaap_UnrecognizedTaxBenefits | 20,393,000 us-gaap_UnrecognizedTaxBenefits |
Additions based on current year positions |  |  |  | 6,016,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions | 5,875,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions |
Additions based on prior year positions |  |  |  | 5,202,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions | 1,056,000 us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions |
Payments made on account |  |  |  | (12,131,000)penn_UnrecognizedTaxBenefitsDecreasesResultingFromPaymentsMade |  |
Decreases due to settlements and/or reduction in reserve |  |  |  | (8,385,000)us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease | (5,536,000)us-gaap_UnrecognizedTaxBenefitsPeriodIncreaseDecrease |
Currency translation adjustments |  |  |  | (2,480,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation | (1,822,000)us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation |
Balance at the end of the period | $ 8,188,000 us-gaap_UnrecognizedTaxBenefits |  | $ 19,966,000 us-gaap_UnrecognizedTaxBenefits | $ 8,188,000 us-gaap_UnrecognizedTaxBenefits | $ 19,966,000 us-gaap_UnrecognizedTaxBenefits | $ 20,393,000 us-gaap_UnrecognizedTaxBenefits

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