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Inventories
3 Months Ended
Mar. 31, 2019
Inventory Disclosure [Abstract]  
Inventories
Inventories

The components of inventories, net, consisted of the following (in millions):
 
 
March 31, 2019
 
December 31, 2018
New vehicles
 
$
1,784.9

 
$
1,700.1

Used vehicles
 
568.6

 
576.8

Parts and accessories
 
87.5

 
88.4

Total inventories
 
$
2,441.0

 
$
2,365.3