Segment Information - Schedule of Business Segments (Details) - USD ($) $ in Millions		3 Months Ended				9 Months Ended
		Sep. 30, 2023		Sep. 30, 2022		Sep. 30, 2023		Sep. 30, 2022		Dec. 31, 2022
Segment Reporting Information [Line Items]
Net sales		$ 2,723		$ 2,301		$ 8,371		$ 7,325
Other (charges) gains, net (Note 14)		(17)		(15)		(50)		(15)
Operating profit (loss)		842		308		1,428		1,322
Equity in net earnings (loss) of affiliates		12		73		50		189
Depreciation and amortization		173		100		517		309
Capital expenditures		119	[1]	123	[1]	379	[2]	369	[2]
Goodwill and intangible assets, net		10,935				10,935				$ 11,247
Total assets		25,538				25,538				26,272
Increase (decrease) in accrued capital expenditures		(12)		(16)		(61)		(31)
Engineered Materials
Segment Reporting Information [Line Items]
Net sales		1,528		929		4,743		2,787
Acetyl Chain
Segment Reporting Information [Line Items]
Net sales	[3]	1,195		1,372		3,628		4,538
Operating Segments | Engineered Materials
Segment Reporting Information [Line Items]
Net sales		1,528		929		4,743		2,787
Other (charges) gains, net (Note 14)		(15)		(14)		(44)		(14)
Operating profit (loss)		691	[4]	114		961	[5]	404
Equity in net earnings (loss) of affiliates		8		69		37		171
Depreciation and amortization		111		43		335		134
Capital expenditures		51		34		154		99
Goodwill and intangible assets, net		10,518				10,518				10,826
Total assets		17,478				17,478				20,611
Operating Segments | Acetyl Chain
Segment Reporting Information [Line Items]
Net sales		1,220		1,397		3,703		4,608
Other (charges) gains, net (Note 14)		0		0		(1)		0
Operating profit (loss)		272		312		845		1,243
Equity in net earnings (loss) of affiliates		1		1		4		8
Depreciation and amortization		55		53		163		161
Capital expenditures		44		74		162		231
Goodwill and intangible assets, net		417				417				421
Total assets		5,528				5,528				5,471
Corporate, Non-Segment | Other Activities
Segment Reporting Information [Line Items]
Net sales		0		0		0		0
Other (charges) gains, net (Note 14)		(2)		(1)		(5)		(1)
Operating profit (loss)		(121)		(118)		(378)		(325)
Equity in net earnings (loss) of affiliates		3		3		9		10
Depreciation and amortization		7		4		19		14
Capital expenditures		24		15		63		39
Goodwill and intangible assets, net		0				0				0
Total assets		2,532				2,532				190
Eliminations
Segment Reporting Information [Line Items]
Net sales		(25)	[6]	(25)	[6]	(75)	[7]	(70)	[7]
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		$ 25		$ 25		$ 75		$ 70

[1] Includes a decrease in accrued capital expenditures of $12 million and $16 million for the three months ended September 30, 2023 and 2022, respectively.

[2] Includes a decrease in accrued capital expenditures of $61 million and $31 million for the nine months ended September 30, 2023 and 2022, respectively.

[3] Excludes intersegment sales of $25 million and $25 million for the three months ended September 30, 2023 and 2022, respectively. Excludes intersegment sales of $75 million and $70 million for the nine months ended September 30, 2023 and 2022, respectively.

[4] Includes a $508 million gain related to the formation of the Nutrinova joint venture included in Gain (loss) on disposition of businesses and assets, net in the unaudited interim consolidated statements of operations (Note 3).

[5] Includes a $508 million gain related to the formation of the Nutrinova joint venture included in Gain (loss) on disposition of businesses and assets, net in the unaudited interim consolidated statements of operations (Note 3).

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

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