Property, Plant and Equipment

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

($ in millions)		Useful Lives (years)	2018		2017
	Land and land improvements	1-30		$489		$487
	Buildings	20-40	1,472		1,488
	Machinery and equipment	5-25	3,387		3,432
	Other	3-20	989		958
	Construction in progress		296		229
	Total(1)			$6,633		$6,594
	Less: accumulated depreciation		3,828		3,770
	Net			$2,805		$2,824

(1) Interest capitalized in 2018, 2017 and 2016 was $4 million, $7 million and $8 million, respectively.