Property, Plant and Equipment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Total	$ 516	$ 476
Less accumulated depreciation	(386)	(355)
Net property, plant and equipment	130	121
Depreciation	33	31	$ 27
Land
Property, Plant and Equipment [Line Items]
Total	5	5
Buildings and property improvements
Property, Plant and Equipment [Line Items]
Total	$ 124	122
Buildings and property improvements | Minimum
Property, Plant and Equipment [Line Items]
PPE, useful life (in years)	1 year
Buildings and property improvements | Maximum
Property, Plant and Equipment [Line Items]
PPE, useful life (in years)	35 years
Equipment and other
Property, Plant and Equipment [Line Items]
Total	$ 387	$ 349
Equipment and other | Minimum
Property, Plant and Equipment [Line Items]
PPE, useful life (in years)	1 year
Equipment and other | Maximum
Property, Plant and Equipment [Line Items]
PPE, useful life (in years)	25 years