Property, Plant and Equipment, Net (Schedule of Property, Plant and Equipment, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Property, Plant and Equipment [Line Items]
Gross asset value	$ 6,346	$ 5,816
Accumulated depreciation	(2,584)	(2,239)
Net book value	3,762	3,577
Land [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	47	38
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	72	70
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	758	695
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	5,101	4,753
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	$ 368	$ 260