XML 25 R12.htm IDEA: XBRL DOCUMENT v3.10.0.1
Inventories
 9 Months Ended
Sep. 30, 2018
Inventory Disclosure [Abstract]  
Inventories

4.   Inventories

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

 

(Stated in millions)

 

 

 

 

 

 

 

 

 

 

Sept. 30,

 

 

Dec. 31,

 

 

2018

 

 

2017

 

Raw materials & field materials

$

1,885

 

 

$

1,846

 

Work in progress

 

541

 

 

 

503

 

Finished goods

 

1,682

 

 

 

1,697

 

 

$

4,108

 

 

$

4,046