Inventories (Tables)

12 Months Ended

Dec. 31, 2017

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories are summarized as follows (in millions):

	December 31,
	2017		2016
Raw materials	$	1,880	$	1,610
Work in process	352		626
Finished goods	670		928
Total	$	2,902	$	3,164
Reported as:
Inventories	$	801	$	1,587
Other long-term assets	2,101		1,577
Total	$	2,902	$	3,164