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Revenues - Retail Commercial Truck Dealership (Details) - Retail Commercial Truck Dealership - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Revenues |  |  |  |
Total revenues | $ 385.3 |  | $ 1,016.5 |
New vehicle |  |  |  |
Revenues |  |  |  |
Total revenues | 249.4 |  | 630.5 |
Used vehicle |  |  |  |
Revenues |  |  |  |
Total revenues | 32.5 |  | 86.3 |
Finance and insurance, net |  |  |  |
Revenues |  |  |  |
Total revenues | 2.9 |  | 9.0 |
Service and parts |  |  |  |
Revenues |  |  |  |
Total revenues | 93.1 |  | 275.7 |
Other |  |  |  |
Revenues |  |  |  |
Total revenues | $ 7.4 |  | $ 15.0 |
Without Adoption of ASC 606 |  |  |  |
Revenues |  |  |  |
Total revenues |  | $ 299.6 |  | $ 739.8
Without Adoption of ASC 606 | New vehicle |  |  |  |
Revenues |  |  |  |
Total revenues |  | 184.3 |  | 411.5
Without Adoption of ASC 606 | Used vehicle |  |  |  |
Revenues |  |  |  |
Total revenues |  | 25.7 |  | 67.9
Without Adoption of ASC 606 | Finance and insurance, net |  |  |  |
Revenues |  |  |  |
Total revenues |  | 2.1 |  | 6.6
Without Adoption of ASC 606 | Service and parts |  |  |  |
Revenues |  |  |  |
Total revenues |  | 83.3 |  | 244.6
Without Adoption of ASC 606 | Other |  |  |  |
Revenues |  |  |  |
Total revenues |  | $ 4.2 |  | $ 9.2

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