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Inventories
6 Months Ended
Jun. 30, 2013
Inventory, Net [Abstract]  
Inventories
Inventories
The principal categories of inventories are:
 
 
June 30, 2013
 
December 31, 2012
Finished goods
$
576

 
$
585

Work in process
34

 
36

Raw materials
99

 
101

Total
$
709

 
$
722