XML 69 R49.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Organization and Summary of Significant Accounting Policies - Business Overview (Details) $ in Millions |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 27, 2016 USD ($) | Jul. 26, 2016 | Dec. 31, 2016 USD ($) item | Oct. 31, 2016 item | Jul. 31, 2016 item | Apr. 30, 2016 item | Feb. 28, 2015 item | Dec. 31, 2016 USD ($) item | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2016 USD ($) item | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Jan. 31, 2016 | Aug. 31, 2015 | Oct. 31, 2014
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ |  |  |  |  |  |  |  | $ 4,887.8 | $ 5,152.0 | $ 5,254.1 | $ 4,824.6 | $ 4,921.3 | $ 4,960.1 | $ 4,920.6 | $ 4,482.9 | $ 20,118.5 | $ 19,284.9 | $ 17,232.0 |  |  |
Receivables from manufacturers | $ |  |  | $ 196.5 |  |  |  |  | $ 196.5 |  |  |  | $ 178.9 |  |  |  | $ 196.5 | $ 178.9 |  |  |  |
German Automotive Dealership Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  | 68.00% |  |  |  |  | 68.00% |  |  |  |  | 60.00% |  |  | 68.00% |  |  |  | 50.00% |
Ownership acquired (as a percent) |  |  |  |  |  |  |  |  |  |  | 8.00% |  |  |  |  |  | 10.00% |  |  |  |
Nicole Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage of equity method investment |  |  | 49.00% |  |  |  |  | 49.00% |  |  |  |  |  |  |  | 49.00% |  |  | 49.00% |  |
PTG |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  | 100.00% |  |  |  |  | 100.00% |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
PTL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in Penske Truck Leasing Co (as a percent) |  | 9.00% |  |  |  |  |  |  |  |  |  |  |  |  |  | 23.40% |  |  |  |  |
Ownership acquired (as a percent) | 14.40% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cost of acquisition | $ | $ 498.5 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage of equity method investment |  |  | 23.40% |  |  |  |  | 23.40% |  |  |  |  |  |  |  | 23.40% |  |  |  |  |
Penske Corporation | PTL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in Penske Truck Leasing Co (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 41.10% |  |  |  |  |
Mitsui and Co | PTL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in Penske Truck Leasing Co (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |  |  |  |  |
GEC | PTL |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest in Penske Truck Leasing Co (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.50% |  |  |  |  |
Retail Automotive Dealership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total number of owned and operated franchises |  |  | 355 |  |  |  |  | 355 |  |  |  |  |  |  |  | 355 |  |  |  |  |
Number of owned and operated franchises in US |  |  | 164 |  |  |  |  | 164 |  |  |  |  |  |  |  | 164 |  |  |  |  |
Number of owned and operated franchises outside US |  |  | 191 |  |  |  |  | 191 |  |  |  |  |  |  |  | 191 |  |  |  |  |
Number of acquired franchises |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |  |
Number of franchises awarded to the reporting entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 7 |  |  |  |  |
Number of franchises disposed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |  |  |  |  |
Retail Automotive Dealership | Northern Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  | 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest (as a percent) |  |  |  | 84.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retail Automotive Dealership | Nicole Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage of equity method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 49.00% |  |
Retail Automotive Dealership | Dealer Group in UK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  |  | 12 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Retail Commercial Truck Dealership | PTG |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of dealerships operated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20 |  |  |  |  |
Ownership interest (as a percent) |  |  | 100.00% |  |  |  |  | 100.00% |  |  |  | 96.00% |  |  |  | 100.00% | 96.00% |  |  |  |
Ownership acquired (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |
Number of full service retail locations operated |  |  | 14 |  |  |  |  | 14 |  |  |  |  |  |  |  | 14 |  |  |  |  |
Number of retail locations acquired |  |  | 2 |  |  | 4 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage of equity method investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 32.00%
Commercial Vehicle Distribution |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum number of dealership locations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 70 |  |  |  |  |
Number of retail dealerships owned by the reporting entity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6 |  |  |  |  |
BMW, MINI | Automotive dealership revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |
Audi/Volkswagen/Porsche/Bentley | Automotive dealership revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 24.00% |  |  |  |  |
Mercedes-Benz/Sprinter/smart | Automotive dealership revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00% |  |  |  |  |
Toyota/Lexus | Automotive dealership revenues |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of total |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |
Retail Automotive Dealership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 18,673.2 | $ 17,896.3 | 16,657.5 |  |  |
Retail Commercial Truck Dealership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000.7 | 944.1 | 125.6 |  |  |
Commercial Vehicle Distribution and Other |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total revenues | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 444.6 | $ 444.5 | $ 448.9 |  |  |
Volkswagen Dealership | Retail Automotive Dealership | Dealer Group in UK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  |  | 7 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
BMW Dealership | Nicole Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of dealerships operated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 4 |  |  |  |  |
BMW Dealership | Retail Automotive Dealership | Dealer Group in UK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
MINI Dealership | Nicole Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of dealerships operated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |
MINI Dealership | Retail Automotive Dealership | Dealer Group in UK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Audi Dealership | Retail Automotive Dealership | Northern Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Audi Dealership | Retail Automotive Dealership | Dealer Group in UK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Skoda Dealership | Retail Automotive Dealership | Dealer Group in UK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEAT Dealership | Retail Automotive Dealership | Dealer Group in UK |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Porsche Dealership | Retail Automotive Dealership | Northern Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Land Rover Dealership | Retail Automotive Dealership | Northern Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Volvo Dealership | Retail Automotive Dealership | Northern Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Nissan Dealership | Retail Automotive Dealership | Northern Italy |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of acquired franchises |  |  |  | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Scion | Retail Automotive Dealership |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of franchises disposed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 17 |  |  |  |  |
ALPINA Dealership | Nicole Group |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Significant Accounting Policies |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of dealerships operated |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |  |  |  |

X
- Definition The percentage of investment ownership. + References No definition available. + Details
Name: | pag_InvestmentOwnershipPercentage
Namespace Prefix: | pag_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the ownership interest acquired by the entity during the period. + References No definition available. + Details
Name: | pag_InvestmentOwnershipPercentageAcquired
Namespace Prefix: | pag_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the minimum number of dealership locations wherein the vehicles were distributed and sold. + References No definition available. + Details
Name: | pag_MinimumNumberOfDealershipLocations
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of dealerships operated. + References No definition available. + Details
Name: | pag_NumberOfDealershipsOperated
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of franchises acquired. + References No definition available. + Details
Name: | pag_NumberOfFranchisesAcquired
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of brands represented by franchises awarded to the reporting entity. + References No definition available. + Details
Name: | pag_NumberOfFranchisesAwardedToReportingEntity
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of franchises disposed of by the entity during the period. + References No definition available. + Details
Name: | pag_NumberOfFranchisesDisposed
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of full service retail locations operated by the equity method investee. + References No definition available. + Details
Name: | pag_NumberOfFullServiceRetailLocationsOperated
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Total number of owned and operated franchises. + References No definition available. + Details
Name: | pag_NumberOfOwnedAndOperatedFranchises
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of owned and operated franchises in domestic country. + References No definition available. + Details
Name: | pag_NumberOfOwnedAndOperatedFranchisesInDomesticCountry
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of owned and operated franchises in foreign countries. + References No definition available. + Details
Name: | pag_NumberOfOwnedAndOperatedFranchisesInForeignCountries
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of retail locations acquired. + References No definition available. + Details
Name: | pag_NumberOfRetailLocationsAcquired
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of truck retail dealerships owned by the reporting entity. + References No definition available. + Details
Name: | pag_NumberOfTruckRetailDealershipsOwnedByReportingEntity
Namespace Prefix: | pag_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the total amount of receivables from manufacturers as of the balance sheet date. + References No definition available. + Details
Name: | pag_ReceivablesFromManufacturer
Namespace Prefix: | pag_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | pag_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | pag_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6404-108592 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition This element represents the aggregate cost of investments accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_EquityMethodInvestmentAggregateCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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 Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571 + Details
Name: | us-gaap_EquityMethodInvestmentOwnershipPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The number of units or percentage investment held by one or more members or limited partners of the LLC or LP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
Name: | us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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 -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=pag_GermanAutomotiveDealershipJointVentureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=pag_NicoleGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=pag_PremierTruckGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=pag_PenskeTruckLeasingCoLPMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pag_PenskeCorporationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pag_MitsuiAndCoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=pag_GECapitalMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FranchisorDisclosureAxis=pag_RetailAutomotiveDealershipOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentGeographicRegionAxis=pag_NorthernItalyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=pag_SpecificDealerGroupInUkMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FranchisorDisclosureAxis=pag_RetailCommercialTruckDealershipOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FranchisorDisclosureAxis=pag_CommercialVehicleDistributionOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FranchisorDisclosureAxis=pag_BmwMiniMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FranchisorDisclosureAxis=pag_AudiVolkswagenPorscheBentleyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FranchisorDisclosureAxis=pag_MercedesBenzSprinterSmartMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FranchisorDisclosureAxis=pag_ToyotaLexusMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=pag_RetailAutomotiveDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=pag_RetailCommercialTruckDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=pag_CommercialVehicleDistributionAndOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_VolkswagenDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_BMWDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_MINIDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_AudiDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_SkodaDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_SeatDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_PorscheMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_LandRoverDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_VolvoDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_NissanDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_ScionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | pag_TypeOfDealershipAxis=pag_AlpinaDealershipMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |