Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.20.2
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2020
Jun. 30, 2020
Dec. 31, 2019
Other Commitments [Line Items]      
Maximum exposure associated with general indemnifications   $ 42.0 $ 46.5
General indemnifications minimum expiration period 1 year    
General indemnifications maximum expiration period 3 years    
Percentage of dealership that is accounted for under the equity method   50.00%  
Contingent liability reserve balance after reduction   $ 4.3  
Other accrued liabilities      
Other Commitments [Line Items]      
Amount reserved for pending proceedings   0.3 1.2
Other long-term liabilities      
Other Commitments [Line Items]      
Amount reserved for pending proceedings   $ 0.2 $ 0.3