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Income Taxes (Details 3) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013
Income Taxes |  |
Tax reserves related to current year uncertain tax positions | $ 6.0 penn_UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositionsTaxReserves |
Tax reserves related to prior year uncertain tax positions | 5.2 penn_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositionsTaxReserves |
Accrued interest related to prior year uncertain tax positions | 8.0 penn_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositionsAccruedInterest |
Previously recorded tax reserves for uncertain tax positions that have settled and/or closed | 0.4 penn_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthoritiesTaxReserves |
Net tax expense in connection with uncertain tax positions | 2.3 penn_UnrecognizedTaxBenefitsNetTaxExpenseBenefit |
Tax positions that, if reversed, would affect the effective tax rate | 11.5 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate | 21.3 us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Currency translation gains (losses) for foreign currency tax positions | 2.5 penn_UnrecognizedTaxBenefitsCurrencyTranslationAdjustments | 1.8 penn_UnrecognizedTaxBenefitsCurrencyTranslationAdjustments
Interest and penalties recognized, net of deferred taxes | 1.2 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense | 0.7 us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense
Reductions in previously accrued interest and penalties | 0.3 penn_UnrecognizedTaxBenefitsReversalOfPreviouslyAccruedInterestAndPenalties |
Prepaid Taxes | $ 32.3 us-gaap_PrepaidTaxes | $ 39.4 us-gaap_PrepaidTaxes

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- Definition The amount of tax reserves related to decreases in unrecognized tax benefits resulting from settlements with taxing authorities. + References No definition available. + Details
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- Definition The amount of tax reserves related to increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns. + References No definition available. + Details
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- Definition The amount of accrued interest related to increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the prior period, excluding amounts pertaining to examined tax returns. + References No definition available. + Details
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- Definition The amount of tax reserves related to increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the prior period, excluding amounts pertaining to examined tax returns. + References No definition available. + Details
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- Definition Represents net tax expense (benefit) in connection with uncertain tax positions. + References No definition available. + Details
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- Definition Represents the reversal of previously accrued interest and penalties. + References No definition available. + Details
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- Definition Amount of asset related to consideration paid in advance for income and other taxes that provide economic benefits within a future period of one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Current Assets -URI http://asc.fasb.org/extlink&oid=6509628 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6787-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 05 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=47804770&loc=d3e5865-108316 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 340 -SubTopic 10 -Section 05 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=47804770&loc=d3e5879-108316 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (g)(4) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 + Details
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- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6907707&loc=SL6600010-109319 + Details
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