Represents the percentage of additional investment ownership interest acquired during the period.

No definition available.

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- Definition

The percentage of investment ownership.

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No definition available.

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- Definition

Represents the ownership interest acquired by the entity during the period.

+ References

No definition available.

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- Definition

Represents the minimum number of vehicle brands offered.

+ References

No definition available.

+ Details

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- Definition

Represents the minimum number of dealership locations wherein the vehicles were distributed and sold.

+ References

No definition available.

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- Definition

Represents the minimum number of vehicles retailed and wholesaled.

+ References

No definition available.

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- Definition

Represents the number of dealerships operated.

+ References

No definition available.

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- Definition

Number of franchises acquired.

+ References

No definition available.

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- Definition

Number of brands represented by franchises awarded to the reporting entity.

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No definition available.

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- Definition

Represents the number of franchises disposed of by the entity during the period.

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No definition available.

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- Definition

Represents the number of full service retail locations operated by the equity method investee.

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No definition available.

+ Details

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Represents the number of operating franchises.

+ References

No definition available.

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Total number of owned and operated franchises.

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No definition available.

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Number of owned and operated franchises in domestic country.

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No definition available.

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- Definition

Number of owned and operated franchises in foreign countries.

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No definition available.

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- Definition

Represents the number of retail commercial vehicle dealerships owned by the reporting entity.

+ References

No definition available.

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Represents the number of retail locations acquired.

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No definition available.

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- Definition

Number of vehicles operated and maintained.

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No definition available.

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- References

No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

This element represents the aggregate cost of investments accounted for under the equity method of accounting.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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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.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

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

+ References

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-Name Accounting Standards Codification
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Interim Financial Statements - Business Overview (Details) $ in Millions				1 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended
	Jul. 27, 2016 USD ($) item	Jul. 01, 2016 item	Jun. 30, 2016 item	Apr. 30, 2016 item	Feb. 28, 2015 item	Jun. 30, 2016 USD ($) item	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) item	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Jan. 31, 2016	Oct. 31, 2014
Interim Financial Statements
Total revenues \| $						$ 5,254.1	$ 4,920.6	$ 10,078.7	$ 9,403.5
Subsequent event
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)	23.40%
German Automotive Dealership Group
Interim Financial Statements
Additional ownership interest acquired (as a percent)								8.00%
Ownership interest (as a percent)			68.00%			68.00%		68.00%
Nicole Group \| BMW Dealership
Interim Financial Statements
Number of dealerships operated								4
Nicole Group \| MINI Dealership
Interim Financial Statements
Number of dealerships operated								3
Retail Automotive Dealership
Interim Financial Statements
Total number of owned and operated franchises			352			352		352
Number of owned and operated franchises in US			180			180		180
Number of owned and operated franchises outside US			172			172		172
Minimum number of vehicles retailed and wholesaled								273,000
Minimum number of vehicle brands offered								40
Number of acquired franchises								1
Number of franchises disposed								8
Number of franchises awarded to the reporting entity								4
Retail Automotive Dealership \| Nicole Group
Interim Financial Statements
Ownership percentage of equity method investment											49.00%
Retail Automotive Dealership \| Dealer Group in UK \| Subsequent event
Interim Financial Statements
Number of acquired franchises		12
Retail Automotive Dealership \| Dealer Group in UK \| BMW Dealership \| Subsequent event
Interim Financial Statements
Number of acquired franchises		1
Retail Automotive Dealership \| Dealer Group in UK \| MINI Dealership \| Subsequent event
Interim Financial Statements
Number of acquired franchises		1
Retail Automotive Dealership \| Dealer Group in UK \| Volkswagen Dealership \| Subsequent event
Interim Financial Statements
Number of acquired franchises		7
Retail Automotive Dealership \| Dealer Group in UK \| Audi Dealership \| Subsequent event
Interim Financial Statements
Number of acquired franchises		1
Retail Commercial Truck Dealership
Interim Financial Statements
Number of operating locations								19
Number of full service retail locations operated			14			14		14
Number of retail locations acquired				5	2
Retail Commercial Truck Dealership \| PTG
Interim Financial Statements
Ownership interest (as a percent)			100.00%			100.00%		100.00%		96.00%
Ownership acquired (as a percent)										5.00%
Ownership percentage of equity method investment												32.00%
Commercial Vehicle Distribution
Interim Financial Statements
Minimum number of dealership locations								70
Number of commercial vehicle dealerships								3
Automotive dealership revenues \| Geographic \| U.S. and Puerto Rico
Interim Financial Statements
Automotive dealership revenue (as a percent)								58.00%
Automotive dealership revenues \| Geographic \| Outside the U.S.
Interim Financial Statements
Automotive dealership revenue (as a percent)								42.00%
Automotive dealership revenues \| Premium brands
Interim Financial Statements
Automotive dealership revenue (as a percent)								72.00%
Retail Automotive Dealership
Interim Financial Statements
Total revenues \| $						$ 4,836.8	4,554.9	$ 9,349.7	8,741.7	$ 17,900.0
Retail Commercial Truck Dealership
Interim Financial Statements
Total revenues \| $						309.5	241.9	516.2	434.6
Commercial Vehicle Distribution and Other
Interim Financial Statements
Total revenues \| $						$ 107.8	$ 123.8	$ 212.8	$ 227.2
Penske Truck Leasing Co., L.P. \| Subsequent event
Interim Financial Statements
Additional ownership interest acquired (as a percent)	14.40%
Ownership interest in Penske Truck Leasing Co (as a percent)	23.40%
Cost of acquisition \| $	$ 498.7
Number of vehicles operated and maintained	238,000
Penske Truck Leasing Co., L.P. \| PTL
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)			9.00%
Penske Corporation \| Subsequent event
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)	41.10%
Mitsui and Co \| Subsequent event
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)	20.00%
GE Capital \| Subsequent event
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)	15.50%