Goodwill and Intangible Assets, net (Schedule of Finite-lived intangible assets) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2017				$ 777
Acquisitions (Note 3)	[1]			35
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend				6
Exchange rate changes				(20)
As of September 30, 2018		$ 798		798
As of December 31, 2017				(591)
Amortization		(5)	$ (5)	(18)	$ (14)
Exchange rate changes				16
As of September 30, 2018		(593)		(593)
Net book value		205		205
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2017				38
Acquisitions (Note 3)				0
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend	[2]			6
Exchange rate changes				(2)
As of September 30, 2018		42		42
As of December 31, 2017				(33)
Amortization				(2)
Exchange rate changes				2
As of September 30, 2018		(33)		(33)
Net book value		9		$ 9
Finite-Lived Intangible Asset, Useful Life				5 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2017				$ 640
Acquisitions (Note 3)				32
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend				0
Exchange rate changes				(17)
As of September 30, 2018		655		655
As of December 31, 2017				(496)
Amortization				(12)
Exchange rate changes				13
As of September 30, 2018		(495)		(495)
Net book value		160		160
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2017				45
Acquisitions (Note 3)				0
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend				0
Exchange rate changes				(1)
As of September 30, 2018		44		44
As of December 31, 2017				(30)
Amortization				(3)
Exchange rate changes				1
As of September 30, 2018		(32)		(32)
Net book value		12		12
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2017				54
Acquisitions (Note 3)				3
Finite-Lived Intangible Assets, Cost Incurred to Renew or Extend				0
Exchange rate changes				0
As of September 30, 2018		57		57
As of December 31, 2017				(32)
Amortization				(1)
Exchange rate changes				0
As of September 30, 2018		(33)		(33)
Net book value		$ 24		$ 24
Omni Plastics [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				11 years

[1] Represents intangible assets acquired related to Omni Plastics (Note 3) with a weighted average amortization period of 11 years.

[2] During the nine months ended September 30, 2018, the Company extended a research and development technology agreement license, which will be amortized over a period of 5 years.