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Property, Plant and Equipment
3 Months Ended
Mar. 31, 2013
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment

6. PROPERTY, PLANT AND EQUIPMENT

 At
 March 31, December 31,
(In millions)2013 2012
      
Original cost$ 114,504 $ 115,006
Less accumulated depreciation and amortization  (46,093)   (45,962)
Property, plant and equipment – net$ 68,411 $ 69,044

Consolidated depreciation and amortization related to property, plant and equipment was $2,310 million and $2,220 million in the three months ended March 31, 2013 and 2012, respectively.