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Segment Information - Total Assets, Equity Method Investments, and Capital Expenditures by Reportable Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Segment Reporting Information |  |  |  |
Capital expenditures | $ 70.8 | $ 99.2 | $ 147.4 | $ 201.7
Retail Automotive |  |  |  |
Segment Reporting Information |  |  |  |
Capital expenditures | 51.6 | 90.9 | 109.5 | 174.9
Retail Commercial Truck |  |  |  |
Segment Reporting Information |  |  |  |
Capital expenditures | 17.5 | 6.5 | 35.3 | 22.6
Other |  |  |  |
Segment Reporting Information |  |  |  |
Capital expenditures | 1.7 | 1.8 | 2.6 | 4.2
Non-Automotive Investments |  |  |  |
Segment Reporting Information |  |  |  |
Capital expenditures | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0

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