Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

(Dollars in millions)	December 31,
	2022			2021			Estimated life
Land and land improvements	$	125		$	147		n/a to 15
Buildings		957			957		20-40
Machinery and equipment		4,155			4,193		3-12
Construction in progress		523			354		n/a
Property, plant and equipment		5,760			5,651
Less accumulated depreciation		(3,800	)		(3,796	)
Net of depreciation	$	1,960		$	1,855

Depreciation Expense

DEPRECIATION INCLUDED IN	2022		2021		2020
Cost of sales	$	329	$	348	$	327
Selling, general and administrative expenses		11		13		13
Research, development and engineering expenses, net		20		23		21
Total	$	360	$	384	$	361