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Inventories
 3 Months Ended
Mar. 31, 2016
Inventory Disclosure [Abstract]  
Inventories

4.   Inventories

A summary of inventories follows:  

 

(Stated in millions)

 

 

 

 

 

 

 

 

 

 

Mar. 31,

 

 

Dec. 31,

 

 

2016

 

 

2015

 

Raw materials & field materials

$

2,355

 

 

$

2,300

 

Work in progress

 

155

 

 

 

178

 

Finished goods

 

1,102

 

 

 

1,278

 

 

$

3,612

 

 

$

3,756