Unaudited Interim Consolidated Statement of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net sales	$ 2,538	$ 1,798
Cost of sales	(1,793)	(1,313)
Gross profit	745	485
Selling, general and administrative expenses	(174)	(137)
Amortization of intangible assets	(11)	(6)
Research and development expenses	(24)	(20)
Other (charges) gains, net	(1)	6
Foreign exchange gain (loss), net	(1)	3
Gain (loss) on disposition of businesses and assets, net	(3)	(5)
Operating profit (loss)	531	326
Equity in net earnings (loss) of affiliates	56	29
Non-operating pension and other postretirement employee benefit (expense) income	24	38
Interest expense	(35)	(25)
Interest income	1	1
Dividend income - equity investments	37	42
Other income (expense), net	2	(2)
Earnings (loss) from continuing operations before tax	616	409
Income tax (provision) benefit	(112)	(85)
Earnings (loss) from continuing operations	504	324
Earnings (loss) from operation of discontinued operations	0	(1)
Income tax (provision) benefit from discontinued operations	0	0
Earnings (loss) from discontinued operations	0	(1)
Net earnings (loss)	504	323
Net (earnings) loss attributable to noncontrolling interests	(2)	(1)
Net earnings (loss) attributable to Celanese Corporation	502	322
Amounts attributable to Celanese Corporation
Earnings (loss) from continuing operations	502	323
Earnings (loss) from discontinued operations	0	(1)
Net earnings (loss)	$ 502	$ 322
Earnings (loss) per common share - basic
Continuing operations	$ 4.64	$ 2.85
Discontinued operations	0	(0.01)
Net earnings (loss) - basic	4.64	2.84
Earnings (loss) per common share - diluted
Continuing operations	4.61	2.83
Discontinued operations	0	(0.01)
Net earnings (loss) - diluted	$ 4.61	$ 2.82
Weighted average shares - basic	108,185,912	113,511,369
Weighted average shares - diluted	108,917,577	114,028,145