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Inventories
3 Months Ended
Mar. 28, 2015
Inventory Disclosure [Abstract]  
Inventories
Inventories
Inventories are stated at the lower of cost or market. Cost is determined using the first-in, first-out method. Finished goods and work-in-process inventories include material, labor and manufacturing overhead costs. A summary of inventories is shown below (in millions):
 
March 28,
2015
 
December 31, 2014
Raw materials
$
737.0

 
$
668.3

Work-in-process
102.5

 
45.6

Finished goods
146.3

 
139.8

Inventories
$
985.8

 
$
853.7