XML 18 R7.htm IDEA: XBRL DOCUMENT
v3.5.0.2

CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2016 | Sep. 30, 2015
Repayment of Sellers' Floor Plan Notes Payable Dealership Acquisitions | $ 59.1 | $ 41.2
5.375% Senior Subordinated Notes Due 2024 |  |
Interest rate (as a percent) | 5.375% |

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

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=pag_SeniorSubordinatedNotes5.375PercentDue2024Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |