Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

($ in millions)		Useful Lives (years)	2016		2015
	Land and land improvements	1-30	$	464	$	482
	Buildings	20-40	1,420		1,453
	Machinery and equipment	5-25	3,584		3,684
	Other	3-20	783		797
	Construction in progress		383		333
	Total(1)		$	6,634	$	6,749
	Less: accumulated depreciation		3,875		3,927
	Net		$	2,759	$	2,822

(1) Interest capitalized in 2016, 2015 and 2014 was $8 million, $9 million and $16 million, respectively.