Goodwill and Intangible Assets, Net (Schedule of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Goodwill
Acquisitions (Note 4)		$ 13
Reallocation of Ibn Sina goodwill (Note 4)		0	[1]
Exchange rate changes	(15)	(37)
Goodwill	760	774		798
Accumulated impairment losses	0	0		0
Total	760	774		798
Advanced Engineered Materials [Member]
Goodwill
Acquisitions (Note 4)		13
Reallocation of Ibn Sina goodwill (Note 4)		34	[1]
Exchange rate changes	(5)	(11)
Goodwill	294	299		263
Accumulated impairment losses	0	0		0
Total	294	299		263
Consumer Specialties [Member]
Goodwill
Acquisitions (Note 4)		0
Reallocation of Ibn Sina goodwill (Note 4)		0	[1]
Exchange rate changes	(3)	(8)
Goodwill	246	249		257
Accumulated impairment losses	0	0		0
Total	246	249		257
Industrial Specialties [Member]
Goodwill
Acquisitions (Note 4)		0
Reallocation of Ibn Sina goodwill (Note 4)		0	[1]
Exchange rate changes	(1)	0
Goodwill	35	35		35
Accumulated impairment losses	0	0		0
Total	35	35		35
Acetyl Intermediates [Member]
Goodwill
Acquisitions (Note 4)		0
Reallocation of Ibn Sina goodwill (Note 4)		(34)	[1]
Exchange rate changes	(6)	(18)
Goodwill	185	191		243
Accumulated impairment losses	0	0		0
Total	$ 185	$ 191		$ 243

[1] Effective April 2010, the Company moved its investment in its Ibn Sina affiliate from its Acetyl Intermediates segment to its Advanced Engineered Materials segment to reflect the change in the affiliate's business dynamics and growth opportunities as a result of the future construction of a POM facility (Note 4).