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Derivative Financial Instruments - Additional Information (Details)
 3 Months Ended
Oct. 02, 2020
USD ($)
numberOfDerivative
Jun. 30, 2019
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Derivative [Line Items]        
Non-trade floor plan notes payable     $ 1,563,000,000.0 $ 1,642,400,000
Amount of net losses expected to reclassify from AOCI into interest expense in earnings within the next twelve months     2,800,000  
Interest rate collar        
Derivative [Line Items]        
Derivative term   5 years    
Derivative, notional amount   $ 300,000,000    
Non-trade floor plan notes payable   $ 1,600,000,000    
Interest Rate Cap | Not Designated as Hedging Instrument        
Derivative [Line Items]        
Derivative term 5 years      
Derivative, notional amount $ 60,000,000      
Number of derivative instruments held | numberOfDerivative 2      
Derivative asset     500,000  
Derivative liability     $ 500,000