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CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Parenthetical) (USD $) In Millions, unless otherwise specified | 6 Months Ended
--- | ---
Jun. 30, 2014 | Jun. 30, 2013
CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS |  |
Dealership acquisitions net, repayment of sellers' floor plan notes payable | $ 23.0 | $ 1.8

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- Definition Repayment of sellers' floor plan notes payable, dealership acquisitions. + References No definition available. + Details
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Namespace Prefix: | pag_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_StatementOfCashFlowsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration