Consolidated Statements of Operations (USD $) In Millions, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net sales	$ 1,807	$ 1,506	$ 5,149	$ 4,411
Cost of sales	(1,406)	(1,160)	(3,987)	(3,544)
Gross profit	401	346	1,162	867
Selling, general and administrative expenses	(140)	(125)	(408)	(373)
Amortization of intangible assets	(17)	(15)	(50)	(45)
Research and development expenses	(24)	(17)	(72)	(52)
Other (charges) gains, net	(24)	36	(39)	(47)
Foreign exchange gain (loss), net	1	(1)	1	1
Gain (loss) on disposition of businesses and assets, net	(1)	(3)	(1)	12
Operating profit (loss)	196	221	593	363
Equity in net earnings (loss) of affiliates	57	37	146	131
Interest expense	(54)	(48)	(166)	(146)
Refinancing expense	0	(16)	(3)	(16)
Interest income	1	0	2	2
Dividend income - cost investments	1	1	80	73
Other income (expense), net	0	(4)	9	1
Earnings (loss) from continuing operations before tax	201	191	661	408
Income tax (provision) benefit	(34)	(44)	(151)	(85)
Earnings (loss) from continuing operations	167	147	510	323
Earnings (loss) from operation of discontinued operations	0	(3)	3	(8)
Gain (loss) on disposition of discontinued operations	0	0	0	2
Income tax (provision) benefit from discontinued operations	0	1	(1)	2
Earnings (loss) from discontinued operations	0	(2)	2	(4)
Net earnings (loss)	167	145	512	319
Net (earnings) loss attributable to noncontrolling interests	0	0	0	0
Net earnings (loss) attributable to Celanese Corporation	167	145	512	319
Cumulative preferred stock dividends	0	0	0	(3)
Net earnings (loss) available to common shareholders	167	145	512	316
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	167	147	510	323
Earnings (loss) from discontinued operations	0	(2)	2	(4)
Net earnings (loss)	$ 167	$ 145	$ 512	$ 319
Earnings (loss) per common share - basic
Continuing operations	$ 1.07	$ 0.94	$ 3.27	$ 2.08
Discontinued operations	$ 0.00	$ (0.01)	$ 0.01	$ (0.03)
Net earnings (loss) - basic	$ 1.07	$ 0.93	$ 3.28	$ 2.05
Earnings (loss) per common share - diluted
Continuing operations	$ 1.05	$ 0.93	$ 3.21	$ 2.04
Discontinued operations	$ 0.00	$ (0.01)	$ 0.01	$ (0.03)
Net earnings (loss) - diluted	$ 1.05	$ 0.92	$ 3.22	$ 2.01
Weighted average shares - basic	156,194,459	155,859,508	156,147,982	154,173,120
Weighted average shares - diluted	159,018,839	157,883,548	158,965,811	158,408,403