Inventories (Tables)

3 Months Ended

Mar. 31, 2020

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)
	Mar. 31,		Dec. 31,
	2020		2019
Raw materials & field materials	$	1,949	$	1,857
Work in progress		542		515
Finished goods		1,657		1,758
	$	4,148	$	4,130