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Related Party Transactions (Details 2) | 12 Months Ended
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Dec. 31, 2014
Audi, Mercedes-Benz, Porsche, smart | Fairfield, Connecticut |
Related party transactions |
Ownership percentage of Equity Method Investment | 82.19%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_FairfieldConnecticutMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_AudiMercedesBenzPorscheSmartMember
Ownership percentage, option to purchase | 20.00%pag_EquityMethodInvestmentOwnershipPercentagePurchaseOption / invest_InvestmentGeographicRegionAxis = pag_FairfieldConnecticutMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_AudiMercedesBenzPorscheSmartMember
Audi, Mercedes-Benz, Porsche, smart | Fairfield, Connecticut | Lucio A. Noto |
Related party transactions |
Ownership percentage of Equity Method Investment | 17.81%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_FairfieldConnecticutMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_AudiMercedesBenzPorscheSmartMember
Mercedes-Benz | Greenwich, Connecticut |
Related party transactions |
Ownership percentage of Equity Method Investment | 80.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_GreenwichConnecticutMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_MercedesBenzMember
Percentage of operating profit | 20.00%pag_PercentageOfJointVentureOperatingProfit / invest_InvestmentGeographicRegionAxis = pag_GreenwichConnecticutMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_MercedesBenzMember
Mercedes-Benz | Greenwich, Connecticut | Lucio A. Noto |
Related party transactions |
Ownership percentage, option to purchase | 20.00%pag_EquityMethodInvestmentOwnershipPercentagePurchaseOption / invest_InvestmentGeographicRegionAxis = pag_GreenwichConnecticutMember / us-gaap_RelatedPartyTransactionsByRelatedPartyAxis = us-gaap_DirectorMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_MercedesBenzMember
Ferrari, Maserati | Las Vegas, Nevada |
Related party transactions |
Ownership percentage of Equity Method Investment | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_LasVegasNevadaMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_FerrariMaseratiMember
Lexus Toyota Volkswagen | Frankfurt, Germany |
Related party transactions |
Ownership percentage of Equity Method Investment | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_FrankfurtGermanyMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_LexusToyotaVolkswagenMember
Audi, Citroen, Kia, Maserati, SEAT, Skoda, Toyota, Volkswagen | Aachen, Germany |
Related party transactions |
Ownership percentage of Equity Method Investment | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_AachenGermanyMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_AudiCitroenKiaMaseratiSeatSkodaToyotaVolkswagenMember
BMW, MINI, Maserati | Northern Italy |
Related party transactions |
Ownership percentage of Equity Method Investment | 70.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_NorthernItalyMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_BmwMiniMaseratiMember
BMW,MINI | Barcelona Spain |
Related party transactions |
Ownership percentage of Equity Method Investment | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / invest_InvestmentGeographicRegionAxis = pag_BarcelonaSpainMember / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_BmwMiniMember
Max Cycles |
Related party transactions |
Ownership percentage of Equity Method Investment | 50.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_MaxCyclesMember
Penske Commercial Leasing Australia |
Related party transactions |
Ownership percentage of Equity Method Investment | 45.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_InnovativeMediaMember
Penske Vehicle Services |
Related party transactions |
Ownership percentage of Equity Method Investment | 31.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_PenskeVehicleServicesMember
National Powersport Auctions |
Related party transactions |
Ownership percentage of Equity Method Investment | 7.00%us-gaap_EquityMethodInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_NPAHoldcoMember
PCV US |
Related party transactions |
Ownership percentage of Consolidated Entity | 91.00%pag_ConsolidatedEntityInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_PcvU.s.Member
i.M. Branded |
Related party transactions |
Ownership percentage of Consolidated Entity | 90.00%pag_ConsolidatedEntityInvestmentOwnershipPercentage / us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis = pag_I.m.BrandedMember

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