Annual report pursuant to Section 13 and 15(d)

Long-Term Debt Long-Term Debt - 2021 Credit Facilities (Details)

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Long-Term Debt Long-Term Debt - 2021 Credit Facilities (Details) - USD ($)
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Line of Credit Facility [Line Items]    
Maximum Borrowing 2019 Mortgage Facility $ 500,000,000.0  
Revolving Credit Facility    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity 450,000,000.0  
2016 Revolving Credit Facility 0 $ 0
Vehicle Floor Plan Facilities    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity 2,400,000,000  
TwoThousandTwentyRevolvingCreditFacility    
Line of Credit Facility [Line Items]    
LineofCreditFacilityMinimumCommitment 50,000,000.0  
Used Vehicle Floor Plan Facility    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity 700,000,000.0  
New Vehicle Floor Plan Facilities    
Line of Credit Facility [Line Items]    
Maximum borrowing capacity 1,350,000,000  
Revolving Credit Facility | TwoThousandTwentyRevolvingCreditFacility    
Line of Credit Facility [Line Items]    
Current borrowing capacity 350,000,000.0  
Borrowing base 350,000,000.0  
2016 Revolving Credit Facility 0  
Letters of credit outstanding amount 11,500,000  
Borrowing availability amount $ 338,500,000  
Allocation of credit facility increase, percentage 40.00%  
DividendRestrictionMaximumAmountPerShare $ 0.18 $ 0.12