Goodwill and Intangible Assets, net (Schedule of Goodwill) (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Goodwill [Line Items]
As of December 31, 2019	$ 1,074
Acquisitions	28
Exchange rate changes	(4)
As of March 31, 2019	1,098	[1]
Goodwill, Impaired, Accumulated Impairment Loss	0
Engineered Materials
Goodwill [Line Items]
As of December 31, 2019	727
Acquisitions	0
Exchange rate changes	(3)
As of March 31, 2019	724	[1]
Acetate Tow
Goodwill [Line Items]
As of December 31, 2019	148
Acquisitions	0
Exchange rate changes	(1)
As of March 31, 2019	147	[1]
Acetyl Chain
Goodwill [Line Items]
As of December 31, 2019	199
Acquisitions	28	[2]
Exchange rate changes	0
As of March 31, 2019	$ 227	[1]

[1] There were $0 million of accumulated impairment losses as of June 30, 2020.

[2] Represents goodwill related to the acquisition of Nouryon's redispersible polymer powders business offered under the Elotex^® brand ("Elotex").