Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment, Net [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

	As of December 31,
	2016		2015
	(In $ millions)
Land	38		39
Land improvements	70		60
Buildings and building improvements	695		679
Machinery and equipment	4,753		4,609
Construction in progress	260		261
Gross asset value	5,816		5,648
Accumulated depreciation	(2,239	)	(2,039	)
Net book value	3,577		3,609

Assets under capital leases, net, included in the amounts above are as follows:

	As of December 31,
	2016		2015
	(In $ millions)
Buildings	13		13
Machinery and equipment	291		289
Accumulated depreciation	(149	)	(138	)
Net book value	155		164

Capitalized interest costs and depreciation expense are as follows:

	Year Ended December 31,
	2016	2015	2014
	(In $ millions)
Capitalized interest	5	15	16
Depreciation expense	281	346	272

During 2016 and 2015, certain long-lived assets were impaired (Note 18). No long-lived assets were impaired during 2014.