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Interim Financial Statements (Details) | 3 Months Ended
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Mar. 31, 2013 item
Interim Financial Statements |
Total number of owned and operated franchises | 342
Number of owned and operated franchises in US | 174
Number of owned and operated franchises outside US | 168
Minimum number of on and off-airport locations in which company operates | 50
Significant Accounting Policies |
Percentage of holding in Italian automotive retail joint venture sold | 50.00%
Ownership interest in the voting stock of the affiliate (as a percent) | 35.00%
Penske Truck Leasing Co., L.P. |
Significant Accounting Policies |
Ownership interest in Penske Truck Leasing Co (as a percent) | 9.00%

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- Definition Number of owned and operated franchises in foreign countries. + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 159 -Paragraph 18 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 18 -Paragraph 20 -Subparagraph a (1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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