Goodwill and Intangible Assets, net (Schedule of Finite-lived intangible assets) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2018	$ 793
Acquisitions	25
Exchange rate changes	(6)
As of March 31, 2019	812
As of December 31, 2018	(595)
Amortization	(6)	$ (6)
Exchange rate changes	6
As of March 31, 2019	(595)
Net book value	217
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2018	42
Acquisitions	0
Exchange rate changes	1
As of March 31, 2019	43
As of December 31, 2018	(33)
Amortization	0
Exchange rate changes	(1)
As of March 31, 2019	(34)
Net book value	9
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2018	651
Acquisitions	25
Exchange rate changes	(7)
As of March 31, 2019	669
As of December 31, 2018	(495)
Amortization	(4)
Exchange rate changes	7
As of March 31, 2019	(492)
Net book value	177
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2018	44
Acquisitions	0
Exchange rate changes	0
As of March 31, 2019	44
As of December 31, 2018	(32)
Amortization	(1)
Exchange rate changes	0
As of March 31, 2019	(33)
Net book value	11
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2018	56
Acquisitions	0
Exchange rate changes	0
As of March 31, 2019	56
As of December 31, 2018	(35)
Amortization	(1)
Exchange rate changes	0
As of March 31, 2019	(36)
Net book value	$ 20
Omni Plastics [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	13 years