Revenue Recognition Disaggregated Revenue (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Net sales		$ 9,673	$ 8,537	$ 5,655
Intersegment [Member]
Disaggregation of Revenue [Line Items]
Net sales		(94)	(75)	(60)
Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		4,024	2,718	2,081
Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales	[1]	5,649	5,819	3,574
Acetyl Chain [Member] | Intersegment [Member]
Disaggregation of Revenue [Line Items]
Net sales		94	75	60
North America [Member] | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,197	774	577
North America [Member] | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,713	1,533	1,106
Europe and Africa | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,538	1,155	906
Europe and Africa | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,961	1,914	1,292
Asia Pacific [Member] | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,180	703	534
Asia Pacific [Member] | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,811	2,214	1,093
South America [Member] | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		109	86	64
South America [Member] | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 164	$ 158	$ 83

[1] Excludes intersegment sales of $94 million, $75 million and $60 million for the years ended December 31, 2022, 2021 and 2020, respectively.