Inventories (Tables)

3 Months Ended

Mar. 31, 2021

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,
	2021		2020
Raw materials & field materials	$	1,545	$	1,573
Work in progress		483		464
Finished goods		1,275		1,317
	$	3,303	$	3,354