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Fixed Assets (Tables)
3 Months Ended
Mar. 31, 2012
Fixed Assets [Abstract]  
Property, Plant and Equipment
                 
    (Stated in millions)  
    Mar. 31,
2012
    Dec. 31,
2011
 

Property, plant & equipment

  $ 30,394     $ 29,551  

Less: Accumulated depreciation

    17,080       16,558  
   

 

 

   

 

 

 
    $ 13,314     $ 12,993