Represents the minimum number of vehicle brands offered.

No definition available.

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Represents the minimum number of vehicles retailed and wholesaled.

+ References

No definition available.

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- Definition

Number of franchises acquired.

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No definition available.

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

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No definition available.

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Represents the number of operating franchises.

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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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Number of owned and operated franchises in foreign countries.

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No definition available.

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- Definition

The number of retail locations operated.

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No definition available.

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The number of stand-alone used vehicle supercenters operated in the United States and United Kingdom.

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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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Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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Interim Financial Statements - Business Overview (Details) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($) item location	Mar. 31, 2019 USD ($)	Dec. 31, 2019 USD ($)
Interim Financial Statements
Total revenues \| $	$ 5,009.1	$ 5,564.4
PTL
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)	28.90%
Retail Automotive Dealership
Interim Financial Statements
Total number of owned and operated franchises	317
Number of owned and operated franchises in US	145
Number of owned and operated franchises outside US	172
Minimum number of vehicles retailed and wholesaled	133,000
Minimum number of vehicle brands offered	35
Number of used vehicle supercenters operated in the U.S. and U.K.	16
Number of franchises disposed	4
Number of acquired franchises	0
Number of retail locations operated \| location	6
Automotive dealership revenues \| Geographic \| U.S. and Puerto Rico
Interim Financial Statements
Automotive dealership revenue (as a percent)	56.00%
Automotive dealership revenues \| Geographic \| Outside the U.S.
Interim Financial Statements
Automotive dealership revenue (as a percent)	44.00%
Automotive dealership revenues \| Premium brands
Interim Financial Statements
Automotive dealership revenue (as a percent)	70.00%
CarShop \| Retail Automotive Dealership
Interim Financial Statements
Number of retail locations operated \| location	10
Penske Corporation \| PTL
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)	41.10%
Mitsui and Co \| PTL
Interim Financial Statements
Ownership interest in Penske Truck Leasing Co (as a percent)	30.00%
PTG \| Retail Commercial Truck Dealership
Interim Financial Statements
Number of operating locations \| location	25
Retail Automotive Dealership
Interim Financial Statements
Total revenues \| $	$ 4,416.6	5,091.2	$ 20,600.0
Retail Automotive Dealership \| UK
Interim Financial Statements
Total revenues \| $	1,665.4	2,039.9
Retail Automotive Dealership \| U.S.
Interim Financial Statements
Total revenues \| $	2,453.9	2,722.8
Retail Commercial Truck Dealership
Interim Financial Statements
Total revenues \| $	491.4	332.3
Commercial Vehicle Distribution and Other
Interim Financial Statements
Total revenues \| $	$ 101.1	$ 140.9