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Inventories
6 Months Ended
Jun. 30, 2019
Inventory Disclosure [Abstract]  
Inventories Inventories

The components of inventories, net, consisted of the following (in millions):
 
 
June 30, 2019
 
December 31, 2018
New vehicles
 
$
1,751.3

 
$
1,700.1

Used vehicles
 
591.5

 
576.8

Parts and accessories
 
89.1

 
88.4

Total inventories
 
$
2,431.9

 
$
2,365.3