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Inventories
3 Months Ended
Mar. 31, 2014
Inventory Disclosure [Abstract]  
Inventories
Inventories
The principal categories of inventories are:
 
 
March 31,
2014
 
December 31, 2013
Finished goods
$
570

 
$
575

Work in process
30

 
27

Raw materials
105

 
97

Total
$
705

 
$
699