Segment Information - Schedule of Business Segments (Details) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2022		Sep. 30, 2021		Sep. 30, 2022		Sep. 30, 2021		Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales		$ 2,301		$ 2,266		$ 7,325		$ 6,262
Other (charges) gains, net (Note 14)		(15)		0		(15)		3
Operating profit (loss)		308		536		1,322		1,429
Equity in net earnings (loss) of affiliates		73		44		189		110
Depreciation and amortization		100		93		309		274
Capital expenditures		123	[1]	123	[1]	369	[2]	309	[2]
Goodwill and intangible assets, net		1,939				1,939				$ 2,147
Total assets		21,337				21,337				11,975
Increase (decrease) in accrued capital expenditures		(16)		21		(31)		5
Engineered Materials
Segment Reporting Information [Line Items]
Net sales		929		684		2,787		2,011
Acetate Tow
Segment Reporting Information [Line Items]
Net sales		135		128		379		385
Acetyl Chain
Segment Reporting Information [Line Items]
Net sales	[3]	1,237		1,454		4,159		3,866
Operating Segments | Engineered Materials
Segment Reporting Information [Line Items]
Net sales		929		684		2,787		2,011
Other (charges) gains, net (Note 14)		(14)		0		(14)		6
Operating profit (loss)		114		91		404		344
Equity in net earnings (loss) of affiliates		69		39		171		96
Depreciation and amortization		43		35		134		105
Capital expenditures		34		36		99		92
Goodwill and intangible assets, net		1,544				1,544				1,714
Total assets		5,672				5,672				5,363
Operating Segments | Acetate Tow
Segment Reporting Information [Line Items]
Net sales		135		128		379		385
Other (charges) gains, net (Note 14)		0		0		0		0
Operating profit (loss)		(3)		12		0		52
Equity in net earnings (loss) of affiliates		0		0		0		0
Depreciation and amortization		10		10		31		29
Capital expenditures		9		10		26		31
Goodwill and intangible assets, net		152				152				154
Total assets		1,202				1,202				1,098
Operating Segments | Acetyl Chain
Segment Reporting Information [Line Items]
Net sales		1,274		1,489		4,268		3,954
Other (charges) gains, net (Note 14)		0		1		0		1
Operating profit (loss)		315		517		1,243		1,284
Equity in net earnings (loss) of affiliates		1		1		8		5
Depreciation and amortization		43		44		130		128
Capital expenditures		65		73		205		171
Goodwill and intangible assets, net		243				243				279
Total assets		4,307				4,307				4,428
Corporate, Non-Segment | Other Activities
Segment Reporting Information [Line Items]
Net sales		0		0		0		0
Other (charges) gains, net (Note 14)		(1)		(1)		(1)		(4)
Operating profit (loss)		(118)		(84)		(325)		(251)
Equity in net earnings (loss) of affiliates		3		4		10		9
Depreciation and amortization		4		4		14		12
Capital expenditures		15		4		39		15
Goodwill and intangible assets, net		0				0				0
Total assets		10,156				10,156				1,086
Eliminations
Segment Reporting Information [Line Items]
Net sales		(37)	[4]	(35)	[4]	(109)	[5]	(88)	[5]
Other (charges) gains, net (Note 14)		0		0		0		0
Operating profit (loss)		0		0		0		0
Equity in net earnings (loss) of affiliates		0		0		0		0
Depreciation and amortization		0		0		0		0
Capital expenditures		0		0		0		0
Goodwill and intangible assets, net		0				0				0
Total assets		0				0				$ 0
Eliminations | Acetyl Chain
Segment Reporting Information [Line Items]
Net sales		$ 37		$ 35		$ 109		$ 88

[1] Includes a decrease in accrued capital expenditures of $16 million and an increase of $21 million for the three months ended September 30, 2022 and 2021, respectively.

[2] Includes a decrease in accrued capital expenditures of $31 million and an increase of $5 million for the nine months ended September 30, 2022 and 2021, respectively.

[3] Excludes intersegment sales of $37 million and $35 million for the three months ended September 30, 2022 and 2021, respectively. Excludes intersegment sales of $109 million and $88 million for the nine months ended September 30, 2022 and 2021, respectively.

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

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