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Segment Information - Total Assets, Equity Method Investments, and Capital Expenditures by Reportable Segment (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Segment Reporting Information |  |
Capital expenditures | $ 76.6 | $ 102.5
Retail Automotive |  |
Segment Reporting Information |  |
Capital expenditures | 57.9 | 84.0
Retail Commercial Truck |  |
Segment Reporting Information |  |
Capital expenditures | 17.8 | 16.1
Other |  |
Segment Reporting Information |  |
Capital expenditures | 0.9 | 2.4
Non-Automotive Investments |  |
Segment Reporting Information |  |
Capital expenditures | $ 0.0 | $ 0.0

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