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Inventories
3 Months Ended
Apr. 04, 2020
Inventory Disclosure [Abstract]  
Inventories Inventories
Inventories are stated at the lower of cost or net realizable value. 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):
 
April 4,
2020
 
December 31,
2019
Raw materials
$
973.3

 
$
906.3

Work-in-process
107.0

 
107.0

Finished goods
381.2

 
380.4

Reserves
(137.2
)
 
(135.5
)
Inventories
$
1,324.3

 
$
1,258.2