Goodwill and Other Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	$ 525	$ 616
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Customer Relationships, Gross	745	754
Finite-Lived Intangible Assets, Accumulated Amortization	$ (220)	(138)
Weighted Average Life	10 years
Licensing Agreements [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Licenses and intellectual property, Gross	$ 122	124
Finite-Lived Intangible Assets, Net	57	69
Finite-Lived Intangible Assets, Accumulated Amortization	$ (65)	(55)
Weighted Average Life	13 years
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Trademarks, Gross	$ 90	93
Finite-Lived Intangible Assets, Net	64	76
Finite-Lived Intangible Assets, Accumulated Amortization	$ (26)	(17)
Weighted Average Life	13 years
Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Other Finite-Lived Intangible Assets, Gross	$ 35	31
Finite-Lived Intangible Assets, Net	13	16
Finite-Lived Intangible Assets, Accumulated Amortization	$ (22)	(15)
Weighted Average Life	11 years
Total Other Intangible Assets [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Net	$ 134	161
Finite-Lived Intangible Assets, Accumulated Amortization	(113)	(87)
Finite-Lived Intangible Assets, Gross	$ 247	$ 248