Supplemental Financial Information Supplemental Financial Information - Property, Plant and Equipment (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 802	$ 800
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	515	478
Property, plant and equipment, net	287	322
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	6	7
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	198	196
Machinery and other equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 598	$ 597