Quarterly report [Sections 13 or 15(d)]

Segment Information - Additional Information (Details)

v3.26.3
Segment Information - Additional Information (Details)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2026
USD ($)
Segment
Sep. 30, 2025
USD ($)
Segment Reporting [Abstract]        
Number of operating segments | Segment     3  
Impairment charges $ 0 $ 0 $ (400) $ (173,800)
Segment Reporting [Line Items]        
Revenues 3,988,800 3,973,800 11,611,300 11,282,300
Retail New Vehicles [Member]        
Segment Reporting [Line Items]        
Revenues 1,761,600 1,872,800 5,138,400 5,195,200
Fleet New Vehicles [Member]        
Segment Reporting [Line Items]        
Revenues 20,400 26,000 65,800 77,400
New vehicles        
Segment Reporting [Line Items]        
Revenues 1,782,000 1,898,800 5,204,200 5,272,600
Used vehicles        
Segment Reporting [Line Items]        
Revenues 1,381,200 1,253,100 3,980,500 3,658,800
Wholesale vehicles        
Segment Reporting [Line Items]        
Revenues 80,100 84,200 222,400 250,500
Total vehicles        
Segment Reporting [Line Items]        
Revenues 3,243,300 3,236,100 9,407,100 9,181,900
Parts, service and collision repair        
Segment Reporting [Line Items]        
Revenues 543,300 533,900 1,590,100 1,503,800
Finance, insurance and other, net        
Segment Reporting [Line Items]        
Revenues $ 202,200 $ 203,800 $ 614,100 $ 596,600