Segment Information - Schedule of Business Segments (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2024		Jun. 30, 2023		Jun. 30, 2024		Jun. 30, 2023		Dec. 31, 2023
Segment Reporting Information [Line Items]
Net sales		$ 2,651		$ 2,795		$ 5,262		$ 5,648
Other (charges) gains, net (Note 14)		(48)		(10)		(62)		(33)
Operating profit (loss)		250		335		460		586
Equity in net earnings (loss) of affiliates		51		23		106		38
Depreciation and amortization		192		172		413		344
Capital expenditures		87	[1]	152	[1]	192	[2]	260	[2]
Goodwill and intangible assets, net		10,743				10,743				$ 10,952
Total assets		25,812				25,812				26,597
Increase (decrease) in accrued capital expenditures		(18)		7		(50)		(49)
Engineered Materials
Segment Reporting Information [Line Items]
Net sales		1,467		1,585		2,845		3,215
Acetyl Chain
Segment Reporting Information [Line Items]
Net sales	[3]	1,184		1,210		2,417		2,433
Operating Segments | Engineered Materials
Segment Reporting Information [Line Items]
Net sales		1,467		1,585		2,845		3,215
Other (charges) gains, net (Note 14)		(43)		(8)		(54)		(29)
Operating profit (loss)		138		158		227		270
Equity in net earnings (loss) of affiliates		47		18		96		29
Depreciation and amortization		121		112		268		224
Capital expenditures		41		58		78		103
Goodwill and intangible assets, net		10,325				10,325				10,525
Total assets		17,470				17,470				17,930
Operating Segments | Acetyl Chain
Segment Reporting Information [Line Items]
Net sales		1,202		1,233		2,463		2,483
Other (charges) gains, net (Note 14)		(1)		0		(1)		(1)
Operating profit (loss)		242		295		496		573
Equity in net earnings (loss) of affiliates		3		2		5		3
Depreciation and amortization		61		54		118		108
Capital expenditures		36		67		76		118
Goodwill and intangible assets, net		418				418				427
Total assets		5,424				5,424				5,538
Corporate, Non-Segment | Other Activities
Segment Reporting Information [Line Items]
Net sales		0		0		0		0
Other (charges) gains, net (Note 14)		(4)		(2)		(7)		(3)
Operating profit (loss)		(130)		(118)		(263)		(257)
Equity in net earnings (loss) of affiliates		1		3		5		6
Depreciation and amortization		10		6		27		12
Capital expenditures		10		27		38		39
Goodwill and intangible assets, net		0				0				0
Total assets		2,918				2,918				3,129
Eliminations
Segment Reporting Information [Line Items]
Net sales		(18)	[4]	(23)	[4]	(46)	[5]	(50)	[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		$ 18		$ 23		$ 46		$ 50

[1] Includes a decrease in accrued capital expenditures of $18 million and an increase of $7 million for the three months ended June 30, 2024 and 2023, respectively.

[2] Includes a decrease in accrued capital expenditures of $50 million and $49 million for the six months ended June 30, 2024 and 2023, respectively.

[3] Excludes intersegment sales of $18 million and $23 million for the three months ended June 30, 2024 and 2023, respectively. Excludes intersegment sales of $46 million and $50 million for the six months ended June 30, 2024 and 2023, respectively.

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

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