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Property, Plant, and Equipment, net (Tables)
12 Months Ended
Dec. 31, 2012
Property, plant and equipment

Property, plant, and equipment consisted of the following (in millions):

 

      2012    2011

Land

     $ 101        $ 98  

Buildings

       5,388          5,159  

Machinery and equipment

       6,728          6,408  

Construction in progress

       768          805  
       12,985          12,470  

Less: accumulated depreciation and amortization

       (8,310 )        (7,859 )

Total property, plant, and equipment, net

     $ 4,675        $ 4,611