Inventories (Tables)

3 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Components of Inventories

Inventories consisted of the following:

	As of March 31, 2018			As of December 31, 2017
	(in millions)
Raw materials	$	736		$	711
Finished product	2,005			1,975
	2,741			2,686
Inventory reserves	(121		)	(129		)
Inventories, net	$	2,620		$	2,557