PROPERTY, PLANT AND EQUIPMENT

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

Note 10. Property, Plant and Equipment - Net

	December 31,
	2018		2017
Land and improvements	$	262	$	287
Machinery and equipment		9,435		10,762
Buildings and improvements		3,125		3,463
Construction in progress		588		675
		13,410		15,187
Less—Accumulated depreciation		(8,114)		(9,261)
	$	5,296	$	5,926

Depreciation expense was $721 million, $717 million and $726 million in 2018, 2017 and 2016.