Inventories (Tables)

12 Months Ended

Dec. 31, 2016

Inventories [Abstract]

Inventories at Lower of Cost or Market

Inventories at Lower of Cost or Market. The table below presents the components of inventories at the lower of cost (first-in, first-out or average cost) or realizable value.

	December 31,
	2016		2015
	(in millions)
Raw materials, components and sub-assemblies	$	165	$	164
Work in process		106		103
Finished goods		59		66
Total	$	330	$	333