Goodwill, Intangibles and Other Assets (Schedule Finite-Lived Intanible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Net	$ 616	$ 611
Customer relationships [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Customer Relationships, Gross	754	662
Intangible assets, Accumulated Amortization	(138)	(51)
Net	$ 616	611
Weighted Average Life	10 years
Licenses and intellectual property [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived License Agreements, Gross	$ 124	121
Intangible assets, Accumulated Amortization	(55)	(44)
Net	$ 69	77
Weighted Average Life	13 years
Trademarks [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Finite-Lived Trademarks, Gross	$ 93	88
Intangible assets, Accumulated Amortization	(17)	(7)
Net	$ 76	81
Weighted Average Life	13 years
Other [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Other Intangible Assets, Gross	$ 31	31
Intangible assets, Accumulated Amortization	(15)	(13)
Net	$ 16	18
Weighted Average Life	12 years
Total Other Intangible Assets [Member]
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible assets, Cost	$ 248	240
Intangible assets, Accumulated Amortization	(87)	(64)
Net	$ 161	$ 176