Revenue Recognition - Disaggregation of net sales (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Revenue, Major Customer [Line Items]
Net sales		$ 2,853	$ 2,538
Engineered Materials
Revenue, Major Customer [Line Items]
Net sales		1,630	910
Acetyl Chain
Revenue, Major Customer [Line Items]
Net sales	[1]	1,223	1,628
Intersegment Eliminations
Revenue, Major Customer [Line Items]
Net sales	[2]	(27)	(24)
Intersegment Eliminations | Acetyl Chain
Revenue, Major Customer [Line Items]
Net sales		27	24
North America | Engineered Materials
Revenue, Major Customer [Line Items]
Net sales		479	289
North America | Acetyl Chain
Revenue, Major Customer [Line Items]
Net sales		365	425
Europe and Africa | Engineered Materials
Revenue, Major Customer [Line Items]
Net sales		560	377
Europe and Africa | Acetyl Chain
Revenue, Major Customer [Line Items]
Net sales		460	592
Asia-Pacific | Engineered Materials
Revenue, Major Customer [Line Items]
Net sales		548	221
Asia-Pacific | Acetyl Chain
Revenue, Major Customer [Line Items]
Net sales		367	561
South America | Engineered Materials
Revenue, Major Customer [Line Items]
Net sales		43	23
South America | Acetyl Chain
Revenue, Major Customer [Line Items]
Net sales		$ 31	$ 50

[1] Excludes intersegment sales of $27 million and $24 million for the three months ended March 31, 2023 and 2022, respectively.

[2] Includes intersegment sales primarily related to the Acetyl Chain.