Segment Information (Schedule of Geographical Segments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 6,140	$ 5,389	$ 5,674
Property, plant and equipment, net	3,762	3,577
BELGIUM
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	295	408	417
Property, plant and equipment, net	57	55
CANADA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	92	123	162
Property, plant and equipment, net	128	132
CHINA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	833	745	800
Property, plant and equipment, net	363	359
GERMANY
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,776	1,540	1,779
Property, plant and equipment, net	979	868
ITALY
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	259	13	0
Property, plant and equipment, net	51	45
MEXICO
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	257	214	204
Property, plant and equipment, net	162	159
SINGAPORE
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	867	758	703
Property, plant and equipment, net	87	90
UNITED STATES
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	1,572	1,451	1,463
Property, plant and equipment, net	1,857	1,798
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	189	137	$ 146
Property, plant and equipment, net	$ 78	$ 71