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Fixed Assets (Tables)
 12 Months Ended
Dec. 31, 2014
Property Plant And Equipment [Abstract]  
Property, Plant and Equipment

A summary of fixed assets follows:

  

(Stated in millions)

 

 

 

 

 

2014

 

  

2013

 

Land

$

445

  

  

$

394

  

Buildings & improvements

 

3,733

  

  

 

3,534

  

Machinery & equipment

 

31,937

  

  

 

29,332

  

Seismic vessels

 

849

  

  

 

1,904

  

 

 

36,964

  

  

 

35,164

  

Less accumulated depreciation

 

21,568

  

  

 

20,068

  

 

$

15,396

  

  

$

15,096