Quarterly report pursuant to Section 13 or 15(d)

Long-Term Debt - 2016 Credit Facilities (Details)

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Long-Term Debt - 2016 Credit Facilities (Details) - USD ($)
3 Months Ended
Mar. 31, 2024
Dec. 31, 2023
Mar. 31, 2023
Mar. 31, 2022
TwoThousandSixteenRevolvingCreditFacilityMember        
Line of Credit Facility [Line Items]        
2016 Revolving Credit Facility $ 0 $ 0    
Revolving Credit Facility | Two Thousand Twenty Vehicle Floor Plan Facility        
Line of Credit Facility [Line Items]        
Current borrowing capacity 2,600,000,000      
Maximum borrowing capacity $ 2,400,000,000   $ 2,900,000,000  
Maximum aggregate commitments allocated to commitments under the 2016 Used Vehicle Floor Plan Facility 40.00%      
Revolving Credit Facility | TwoThousandTwentyRevolvingCreditFacility        
Line of Credit Facility [Line Items]        
Current borrowing capacity $ 350,000,000      
Maximum borrowing capacity 450,000,000     $ 400,000,000
Borrowing base 350,000,000      
2016 Revolving Credit Facility 0      
Letters of credit outstanding amount 11,500,000      
Borrowing availability amount $ 338,500,000      
Maximum dividend (usd per share) $ 0.18 $ 0.12    
LineofCreditFacilityMinimumCommitment $ 50,000,000      
Debt Instrument, Basis Spread on Variable Rate 1000.00%      
Revolving Credit Facility | New Vehicle Floorplan Facility (Commitments)        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity $ 1,350,000,000      
Revolving Credit Facility | Used Vehicle Floor Plan Facility (Commitments)        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity $ 700,000,000