Description of Business and Significant Accounting Policies - Capitalized Software and Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Depreciation	$ 90	$ 91	$ 83
Capitalized Software [Roll Forward]
Beginning balance	311	257	193
Capitalization	154	150	140
Amortization	(118)	(80)	(69)
Impairment	(2)	(16)	(7)
Ending balance	$ 345	$ 311	$ 257
Machinery and other equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	3 years
Machinery and other equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	20 years
Building [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	25 years
Building [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, useful life	45 years
Software Development Costs, Internal Use [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Capitalized computer software, useful life	4 years
Software Development Costs, Internal Use [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Capitalized computer software, useful life	7 years
Software and Software Development Costs [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Capitalized computer software, useful life	3 years
Software and Software Development Costs [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Capitalized computer software, useful life	5 years