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Inventories (Tables)
 12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Inventory Disclosure

A summary of inventories, which are stated at the lower of average cost or market follows:

 

(Stated in millions)

 

 

 

 

 

 

 

 

 

 

2015

 

 

2014

 

Raw materials & field materials

$

2,300

 

 

$

2,666

 

Work in progress.................................................

 

178

 

 

 

273

 

Finished goods..................................................

 

1,278

 

 

 

1,689

 

 

$

3,756

 

 

$

4,628