XML 12 R39.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Floor Plan Notes Payable - Trade and Non-trade (Details) | 9 Months Ended
--- | ---
Sep. 30, 2012
Floor Plan Notes Payable - Trade and Non-trade |
Maturity period of floor plan arrangements outside the U.S. if not payable on demand | 90 days

X
- Definition The maximum period of original maturity for floor plans outside of the United States. + References No definition available. + Details
Name: | pag_FloorPlanNotesPayableForeignMaximumDuration
Namespace Prefix: | pag_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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