Inventories (Tables)

9 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Summary of Inventory

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

(Stated in millions)
	Sept. 30,		Dec. 31,
	2019		2018
Raw materials & field materials	$	1,964	$	1,803
Work in progress		606		519
Finished goods		1,771		1,688
	$	4,341	$	4,010