Revenue Recognition Disaggregated Revenue (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Net sales		$ 8,537	$ 5,655	$ 6,297
Intersegment [Member]
Disaggregation of Revenue [Line Items]
Net sales		(125)	(92)	(117)
Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		2,718	2,081	2,386
Acetate Tow [Member]
Disaggregation of Revenue [Line Items]
Net sales		514	519	636
Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales	[1]	5,305	3,055	3,275
Acetyl Chain [Member] | Intersegment [Member]
Disaggregation of Revenue [Line Items]
Net sales		125	92	117
North America [Member] | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		774	577	735
North America [Member] | Acetate Tow [Member]
Disaggregation of Revenue [Line Items]
Net sales		98	92	125
North America [Member] | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,435	1,014	1,079
Europe and Africa | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,155	906	1,047
Europe and Africa | Acetate Tow [Member]
Disaggregation of Revenue [Line Items]
Net sales		267	273	258
Europe and Africa | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		1,647	1,019	1,098
Asia Pacific [Member] | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		703	534	533
Asia Pacific [Member] | Acetate Tow [Member]
Disaggregation of Revenue [Line Items]
Net sales		140	142	224
Asia Pacific [Member] | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		2,074	951	1,013
South America [Member] | Engineered Materials [Member]
Disaggregation of Revenue [Line Items]
Net sales		86	64	71
South America [Member] | Acetate Tow [Member]
Disaggregation of Revenue [Line Items]
Net sales		9	12	29
South America [Member] | Acetyl Chain [Member]
Disaggregation of Revenue [Line Items]
Net sales		$ 149	$ 71	$ 85

[1] Excludes intersegment sales of $125 million, $92 million and $117 million for the years ended December 31, 2021, 2020 and 2019, respectively.