Property, Plant and Equipment

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment, net is comprised of the following (in millions):

	December 31,
	2020		2019
Buildings	$	68	$	63
Land	7		7
Machinery and equipment	248		232
Furniture and office equipment	25		20
Software and computer equipment	162		168
Leasehold improvements	92		84
Projects in progress	41		36
	643		610
Less accumulated depreciation	(369)		(351)
Property, plant and equipment, net	$	274	$	259

Depreciation expense was $68 million, $72 million and $78 million for the years ended December 31, 2020, 2019 and 2018, respectively.