Property, Plant and Equipment

12 Months Ended

Dec. 31, 2021

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,
	2021		2020
Buildings	$	75	$	68
Land	7		7
Machinery and equipment	276		248
Furniture and office equipment	26		25
Software and computer equipment	127		162
Leasehold improvements	94		92
Projects in progress	40		41
	645		643
Less accumulated depreciation	(373)		(369)
Property, plant and equipment, net	$	272	$	274

Depreciation expense was $72 million, $68 million and $72 million for the years ended December 31, 2021, 2020 and 2019, respectively.