PROPERTY, PLANT AND EQUIPMENT-NET

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

	December 31,
	2021			2020
Land and improvements		$	226		$	259
Machinery and equipment		10,143			10,008
Buildings and improvements		3,225			3,245
Construction in progress		856			825
		14,450			14,337
Less—Accumulated depreciation		(8,888)			(8,767)
		$	5,562		$	5,570

Depreciation expense was $674 million, $644 million and $673 million for the years ended December 31, 2021, 2020 and 2019, respectively.