Property, Plant and Equipment, net

12 Months Ended

Dec. 31, 2016

Property Plant And Equipment [Abstract]

Property, Plant and Equipment, net

5. Property, Plant and Equipment, net

Property, plant and equipment consist of ($ in millions):

	Estimated	December 31,
	Useful Lives	2016			2015
Information technology assets	1-7 Years	$	47		$	48
Operating equipment	2-15 Years		93			84
Buildings and land (1)	5-35 Years		95			98
Construction in progress			1			—
Total property, plant and equipment			236			230
Less: accumulated depreciation			(93	)		(65	)
Property, plant and equipment, net		$	143		$	165

⁽¹⁾ Land has an indefinite life.

Depreciation expense was $32 million, $25 million and $16 million for the years ended December 31, 2016, 2015 and 2014, respectively.