Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment, Net [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

	As of December 31,
	2015		2014
	(In $ millions)
Land	39		42
Land improvements	60		49
Buildings and building improvements	679		658
Machinery and equipment	4,609		3,910
Construction in progress	261		890
Gross asset value	5,648		5,549
Accumulated depreciation	(2,039	)	(1,816	)
Net book value	3,609		3,733

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

	As of December 31,
	2015		2014
	(In $ millions)
Buildings	13		15
Machinery and equipment	289		311
Accumulated depreciation	(138	)	(125	)
Net book value	164		201

Capitalized interest costs and depreciation expense are as follows:

	Year Ended December 31,
	2015	2014	2013
	(In $ millions)
Capitalized interest	15	16	9
Depreciation expense	346	272	280

During 2015 and 2013, certain long-lived assets were impaired (Note 18). No long-lived assets were impaired during 2014.