Goodwill and Intangibles Level 4 (Details) - Schedule of Intangible Assets - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 12	$ 12	$ 13
Finite-Lived Intangible Assets, Gross	246	246
Impairment of Intangible Assets, Finite-lived	(17)	(17)
Finite-Lived Intangible Assets, Accumulated Amortization	(187)	(177)
Intangible Assets, Net (Excluding Goodwill)	42	52
Patents and Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	112	112
Impairment of Intangible Assets, Finite-lived	0	0
Finite-Lived Intangible Assets, Accumulated Amortization	(97)	(91)
Intangible Assets, Net (Excluding Goodwill)	15	21
Customer Lists and Contracts [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	109	109
Impairment of Intangible Assets, Finite-lived	(17)	(17)
Finite-Lived Intangible Assets, Accumulated Amortization	(79)	(75)
Intangible Assets, Net (Excluding Goodwill)	13	17
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Gross	25	25
Impairment of Intangible Assets, Finite-lived	0	0
Finite-Lived Intangible Assets, Accumulated Amortization	(11)	(11)
Intangible Assets, Net (Excluding Goodwill)	$ 14	$ 14