Segment Information (Schedule of Business Segments) (Details) - USD ($) $ in Millions		3 Months Ended				6 Months Ended
		Jun. 30, 2022		Jun. 30, 2021		Jun. 30, 2022		Jun. 30, 2021		Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales		$ 2,486		$ 2,198		$ 5,024		$ 3,996
Other (charges) gains, net (Note 14)		1		(3)		0		3
Operating profit (loss)		483		567		1,014		893
Equity in net earnings (loss) of affiliates		60		37		116		66
Depreciation and amortization		103		91		209		181
Capital expenditures		132	[1]	113	[1]	246	[2]	186	[2]
Goodwill and intangible assets, net		2,023				2,023				$ 2,147
Total assets		12,713				12,713				11,975
Increase (decrease) in accrued capital expenditures		8		3		(15)		(16)
Engineered Materials
Segment Reporting Information [Line Items]
Net sales		948		682		1,858		1,327
Acetate Tow
Segment Reporting Information [Line Items]
Net sales		119		138		244		257
Acetyl Chain
Segment Reporting Information [Line Items]
Net sales	[3]	1,419		1,378		2,922		2,412
Operating Segments [Member] | Engineered Materials
Segment Reporting Information [Line Items]
Net sales		948		682		1,858		1,327
Other (charges) gains, net (Note 14)		1		(1)		0		6
Operating profit (loss)		166		123		290		253
Equity in net earnings (loss) of affiliates		53		32		102		57
Depreciation and amortization		45		35		91		70
Capital expenditures		35		33		65		56
Goodwill and intangible assets, net		1,613				1,613				1,714
Total assets		5,702				5,702				5,363
Operating Segments [Member] | Acetate Tow
Segment Reporting Information [Line Items]
Net sales		119		138		244		257
Other (charges) gains, net (Note 14)		0		0		0		0
Operating profit (loss)		(1)		24		3		40
Equity in net earnings (loss) of affiliates		0		0		0		0
Depreciation and amortization		10		9		21		19
Capital expenditures		9		10		17		21
Goodwill and intangible assets, net		152				152				154
Total assets		1,136				1,136				1,098
Operating Segments [Member] | Acetyl Chain
Segment Reporting Information [Line Items]
Net sales		1,456		1,409		2,994		2,465
Other (charges) gains, net (Note 14)		0		0		0		0
Operating profit (loss)		429		516		928		767
Equity in net earnings (loss) of affiliates		3		2		7		4
Depreciation and amortization		42		43		87		84
Capital expenditures		78		65		140		98
Goodwill and intangible assets, net		258				258				279
Total assets		4,537				4,537				4,428
Corporate, Non-Segment [Member] | Other Activities
Segment Reporting Information [Line Items]
Net sales		0		0		0		0
Other (charges) gains, net (Note 14)		0		(2)		0		(3)
Operating profit (loss)		(111)		(96)		(207)		(167)
Equity in net earnings (loss) of affiliates		4		3		7		5
Depreciation and amortization		6		4		10		8
Capital expenditures		10		5		24		11
Goodwill and intangible assets, net		0				0				0
Total assets		1,338				1,338				1,086
Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales		(37)	[4]	(31)	[4]	(72)	[5]	(53)	[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 [Member] | Acetyl Chain
Segment Reporting Information [Line Items]
Net sales		$ 37		$ 31		$ 72		$ 53

[1] Includes an increase in accrued capital expenditures of $8 million and $3 million for the three months ended June 30, 2022 and 2021, respectively.

[2] Includes a decrease in accrued capital expenditures of $15 million and $16 million for the six months ended June 30, 2022 and 2021, respectively.

[3] Excludes intersegment sales of $37 million and $31 million for the three months ended June 30, 2022 and 2021, respectively. Excludes intersegment sales of $72 million and $53 million for the six months ended June 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.