Property, Plant and Equipment, Net (Schedule of Property, Plant and Equipment, Net) (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Gross asset value	$ 6,522	$ 6,346
Accumulated depreciation	(2,803)	(2,584)
Net book value	3,719	3,762
Land [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	46	47
Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	77	72
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	760	758
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	5,223	5,101
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Gross asset value	$ 416	$ 368