v3.26.1
SEGMENT INFORMATION - Schedule of Reportable Segment Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Segment Reporting Information    
Total revenues $ 5,407.1 $ 5,505.3
Cost of sales 4,529.2 4,613.3
SG&A expenses 600.6 617.3
Depreciation and amortization expense 31.1 29.3
Asset impairments 2.5 0.4
Restructuring charges 1.0 11.1
Floorplan interest expense 23.3 26.9
Other interest expense, net 48.8 39.8
Other segment items   (0.3)
Income before income taxes 170.5 167.5
Real estate related capital expenditures 34.3 14.9
Non-real estate related capital expenditures 49.8 37.4
Total capital expenditures 84.0 52.2
U.S.    
Segment Reporting Information    
Total revenues 3,763.8 3,921.8
Cost of sales 3,116.6 3,246.8
SG&A expenses 418.2 447.4
Depreciation and amortization expense 23.4 21.0
Asset impairments 1.9 (2.3)
Restructuring charges 0.0 0.0
Floorplan interest expense 16.2 20.6
Other interest expense, net 42.9 32.3
Other segment items   (0.3)
Income before income taxes 144.6 156.1
Real estate related capital expenditures 10.9 14.9
Non-real estate related capital expenditures 43.4 33.6
Total capital expenditures 54.2 48.4
U.K.    
Segment Reporting Information    
Total revenues 1,643.3 1,583.5
Cost of sales 1,412.6 1,366.5
SG&A expenses 182.4 169.8
Depreciation and amortization expense 7.8 8.3
Asset impairments 0.6 2.7
Restructuring charges 1.0 11.1
Floorplan interest expense 7.1 6.3
Other interest expense, net 5.9 7.5
Other segment items   0.0
Income before income taxes 25.9 11.3
Real estate related capital expenditures 23.4 0.0
Non-real estate related capital expenditures 6.4 3.8
Total capital expenditures $ 29.8 $ 3.8