Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Intangible assets with indefinite lives, gross	$ 128	$ 128
Intangible assets with indefinite lives, accumulated amortization	(6)	(6)
Intangible assets with indefinite lives, net	122	122
Intangible assets, gross	160	161
Intangible assets, accumulated amortization	(24)	(23)
Intangible assets, net	136	138
Trademarks and Patents
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	13	12
Finite-lived intangible assets, accumulated amortization	(9)	(8)
Finite-lived intangible assets, net	4	4
Other Intangible Assets
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	19	21
Finite-lived intangible assets, accumulated amortization	(9)	(9)
Finite-lived intangible assets, net	$ 10	$ 12