Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

(Dollars in millions)	December 31,
	2023			2022			Estimated life
Land and land improvements	$	136		$	125		n/a to 15
Buildings		1,065			957		20-40
Machinery and equipment		4,545			4,156		3-12
Construction in progress		548			522		n/a
Property, plant and equipment		6,294			5,760
Less accumulated depreciation		(4,102	)		(3,801	)
Net of depreciation	$	2,192		$	1,960

Depreciation Expense

DEPRECIATION INCLUDED IN	2023		2022		2021
Cost of sales	$	340	$	329	$	348
Selling, general and administrative expenses		12		11		13
Research, development and engineering expenses, net		24		20		23
Total	$	376	$	360	$	384