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Inventories (Tables)
12 Months Ended
Dec. 31, 2020
Inventory Disclosure [Abstract]  
Schedule of Inventories
The components of inventories consisted of the following:
December 31,
(Dollars in millions)20202019
New vehicles$1,556.6 $1,704.1 
Used vehicles835.9 638.1 
Parts and accessories100.4 91.5 
Total inventories$2,492.9 $2,433.7