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Inventories (Tables)
 12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Inventories at Lower of Cost or Market

Inventories at Lower of Cost or Market. The table below presents the components of inventories at the lower of cost (first-in, first-out or average cost) or realizable value.

 

               December 31,            
                 2015                              2014              
     (in millions)  

Raw materials, components and sub-assemblies

    $ 164            $ 127        

Work in process

      103              97        

Finished goods

      66              64        
  

 

 

     

 

 

  

Total

    $               333            $               288