Goodwill and Intangible Assets, net (Schedule of Finite-lived intangible assets) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 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				(14)
As of June 30, 2018		$ 804		804
As of December 31, 2017				(591)
Amortization		(7)	$ (5)	(13)	$ (9)
Exchange rate changes				12
As of June 30, 2018		(592)		(592)
Net book value		212		212
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				(1)
As of June 30, 2018		43		43
As of December 31, 2017				(33)
Amortization				(1)
Exchange rate changes				1
As of June 30, 2018		(33)		(33)
Net book value		10		$ 10
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				(13)
As of June 30, 2018		659		659
As of December 31, 2017				(496)
Amortization				(8)
Exchange rate changes				12
As of June 30, 2018		(492)		(492)
Net book value		167		167
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				0
As of June 30, 2018		45		45
As of December 31, 2017				(30)
Amortization				(2)
Exchange rate changes				(1)
As of June 30, 2018		(33)		(33)
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 June 30, 2018		57		57
As of December 31, 2017				(32)
Amortization				(2)
Exchange rate changes				0
As of June 30, 2018		(34)		(34)
Net book value		$ 23		$ 23
Nylon compounding division of Nilit Group [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 three months ended June 30, 2018, the Company extended an exclusive acetyls research and development technology agreement license, which will be amortized over a period of 5 years.