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SEGMENT INFORMATION - Reportable Segment Information (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information |  |  |
Total revenues | $ 19,934.3 | $ 17,873.7 | $ 16,222.1
Cost of sales | 16,693.3 | 14,853.4 | 13,256.9
SG&A expenses | 2,179.2 | 1,926.8 | 1,783.3
Depreciation and amortization expense | 113.1 | 92.0 | 88.4
Asset impairments | 33.0 | 32.9 | 2.1
Restructuring charges | 16.7 | 0.0 | 0.0
Other operating (income) expense | (10.0) | 0.0 | 0.0
Floorplan interest expense | 108.5 | 64.1 | 27.3
Other interest expense, net | 141.3 | 99.8 | 77.5
Other segment items | 0.7 | 4.5 | 1.2
Income before income taxes | 658.5 | 800.2 | 985.3
Real estate related capital expenditures | 65.9 | 46.3 | 39.6
Non-real estate related capital expenditures | 179.2 | 139.2 | 115.5
Total capital expenditures | 245.1 | 185.4 | 155.1
U.S. |  |  |
Segment Reporting Information |  |  |
Total revenues | 15,772.9 | 14,814.2 | 13,427.1
Cost of sales | 13,092.0 | 12,204.1 | 10,844.7
SG&A expenses | 1,704.0 | 1,622.9 | 1,516.9
Depreciation and amortization expense | 88.2 | 76.9 | 73.1
Asset impairments | 33.0 | 32.9 | 2.1
Restructuring charges | 0.0 |  |
Other operating (income) expense | (10.0) |  |
Floorplan interest expense | 88.8 | 53.5 | 21.4
Other interest expense, net | 124.8 | 91.4 | 71.0
Other segment items | 0.0 | 0.4 | 0.4
Income before income taxes | 652.2 | 732.1 | 897.4
Real estate related capital expenditures | 42.8 | 41.5 | 17.7
Non-real estate related capital expenditures | 148.5 | 114.6 | 100.2
Total capital expenditures | 191.3 | 156.2 | 117.8
U.K. |  |  |
Segment Reporting Information |  |  |
Total revenues | 4,161.5 | 3,059.5 | 2,795.1
Cost of sales | 3,601.3 | 2,649.4 | 2,412.2
SG&A expenses | 475.2 | 303.9 | 266.5
Depreciation and amortization expense | 24.9 | 15.1 | 15.2
Asset impairments | 0.0 | 0.0 | 0.0
Restructuring charges | 16.7 |  |
Other operating (income) expense | 0.0 |  |
Floorplan interest expense | 19.8 | 10.6 | 5.9
Other interest expense, net | 16.6 | 8.4 | 6.6
Other segment items | 0.7 | 4.1 | 0.8
Income before income taxes | 6.3 | 68.1 | 87.9
Real estate related capital expenditures | 23.1 | 4.7 | 22.0
Non-real estate related capital expenditures | 30.7 | 24.5 | 15.3
Total capital expenditures | $ 53.7 | $ 29.3 | $ 37.3

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