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Inventories (Tables)
 3 Months Ended
Mar. 31, 2015
Inventory Disclosure [Abstract]  
Inventory Disclosure

A summary of inventories follows:  

 

(Stated in millions)

 

 

Mar. 31,

 

 

Dec. 31,

 

 

2015

 

 

2014

 

Raw materials & field materials

$

2,835

 

 

$

2,666

 

Work in process

 

240

 

 

 

273

 

Finished goods

 

1,591

 

 

 

1,689

 

 

$

4,666

 

 

$

4,628