Goodwill and Intangible Assets, net (Schedule of Finite-lived intangible assets) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2019				$ 809
Acquisitions				16
Exchange rate changes				19
As of September 30, 2020		$ 844		844
As of December 31, 2019				(612)
Amortization		(6)	$ (6)	(17)	$ (18)
Exchange rate changes				(17)
As of September 30, 2020		(646)		(646)
Net book value		198		198
Licensing Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2019				42
Acquisitions				0
Exchange rate changes				0
As of September 30, 2020		42		42
As of December 31, 2019				(35)
Amortization				(1)
Exchange rate changes				(1)
As of September 30, 2020		(37)		(37)
Net book value		5		5
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2019				667
Acquisitions	[1]			16
Exchange rate changes				18
As of September 30, 2020		701		701
As of December 31, 2019				(504)
Amortization				(12)
Exchange rate changes				(16)
As of September 30, 2020		(532)		(532)
Net book value		169		169
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2019				44
Acquisitions				0
Exchange rate changes				1
As of September 30, 2020		45		45
As of December 31, 2019				(35)
Amortization				(2)
Exchange rate changes				(1)
As of September 30, 2020		(38)		(38)
Net book value		7		7
Other Intangible Assets [Member]
Finite-Lived Intangible Assets [Line Items]
As of December 31, 2019				56
Acquisitions				0
Exchange rate changes				0
As of September 30, 2020		56		56
As of December 31, 2019				(38)
Amortization				(2)
Exchange rate changes				1
As of September 30, 2020		(39)		(39)
Net book value		$ 17		$ 17
Omni Plastics [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				14 years

[1] Related to acquired Elotex finite-lived intangible assets, with a weighted average amortization period of 14 years