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Revenues - Other Disclosures (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Vehicle Sales | Retail Automotive and Retail Commercial Truck Dealership |  |
Revenues |  |
Payment period | 30 days |
Service and parts | Retail Automotive and Retail Commercial Truck Dealership |  |
Revenues |  |
Payment period | 30 days |
Customer return period, parts sales | 30 days |
Finance and insurance, net | Retail Automotive and Retail Commercial Truck Dealership |  |
Revenues |  |
Payment period | 30 days |
Aggregate reserves relating to chargeback activity | $ 25.9 | $ 24.9
Penske Commercial Vehicles Australia | Commercial Vehicle Distribution and Other |  |
Revenues |  |
Payment period | 30 days |
Penske Power Systems | Commercial Vehicle Distribution and Other |  |
Revenues |  |
Payment period | 30 days |

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- Definition Represents the aggregate amount of reserves for chargeback of sales commission as of the balance sheet date. + References No definition available. + Details
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