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Fixed Assets
9 Months Ended
Sep. 30, 2011
Fixed Assets [Abstract] 
Fixed Assets
6. Fixed Assets
A summary of fixed assets follows:
                 
    (Stated in millions)
    Sept. 30,     Dec. 31,  
    2011     2010  
Property, plant & equipment
  $ 28,960     $ 27,212  
Less: Accumulated depreciation
    16,377       15,141  
 
           
 
  $ 12,583     $ 12,071  
 
           
Depreciation expense relating to fixed assets was as follows:
                 
    (Stated in millions)  
    2011     2010  
Third Quarter
  $ 689     $ 603  
Nine Months
  $ 2,019     $ 1,708