Total number of owned and operated franchises.

No definition available.

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Number of owned and operated franchises in domestic country.

No definition available.

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Number of owned and operated franchises in foreign countries.

No definition available.

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Represents the total amount of receivables from manufacturers as of the balance sheet date.

No definition available.

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The percentage of net product revenue to total net revenue from the sale of goods as of year end.

No definition available.

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The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 22

-Article 12

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Organization and Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
	Dec. 31, 2012 item	Dec. 31, 2011	Dec. 31, 2012 Penske Truck Leasing Co., L.P.	Dec. 31, 2012 BMW/MINI	Dec. 31, 2012 Audi/Volkswagen/Porsche/Bentley	Dec. 31, 2012 Toyota/Lexus/Scion	Dec. 31, 2012 Honda/Acura	Dec. 31, 2012 Mercedes-Benz/Sprinter/smart
Organization and Summary of Significant Accounting Policies
Total number of owned and operated franchises	344
Number of owned and operated franchises in US	173
Number of owned and operated franchises outside US	171
Receivables from manufacturers	$ 125,626	$ 106,127
Significant Accounting Policies
Percentage of total revenues				26.00%	19.00%	14.00%	13.00%	11.00%
Limited partnership interest in Penske Truck Leasing Co (as a percent)			9.00%